diff --git a/.gitignore b/.gitignore
index 01fb28e..e47c79b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -7,3 +7,5 @@ erl_crash.dump
 *.iml
 /ielixir
 test_db.sqlite3
+.DS_store
+resources/ielixir/kernel.json
diff --git a/.travis.yml b/.travis.yml
index 77640b6..f64fed5 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,4 +1,5 @@
 language: elixir
+sudo: true
 elixir:
   - 1.1.0
   - 1.2.3
@@ -6,19 +7,28 @@ otp_release:
   - 17.5
   - 18.1
   - 18.2
-sudo: true
-before_script:
-  - yes | mix deps.get
-  - mix deps.compile
-  - sudo apt-get install python python-pip
+matrix:
+  include:
+    - otp_release: 19.2
+      elixir: 1.4
+    - otp_release: 19.3
+      elixir: 1.4
+python:
+  - "2.7"
+install:
   - sudo pip install virtualenv virtualenvwrapper
   - mkdir ~/.virtualenvs
   - export WORKON_HOME=~/.virtualenvs
   - source /usr/local/bin/virtualenvwrapper.sh
   - mkvirtualenv test_ielixir
   - workon test_ielixir
+  - pip install pip --upgrade
+  - pip install jupyter nose
+  - mix local.rebar --force
+before_script:
+  - yes | mix deps.get
+  - mix deps.compile
   - git clone -b ielixir https://github.com/pprzetacznik/jupyter_kernel_test.git
-  - pip install jupyter-console nose
   - MIX_ENV=dev ./install_script.sh
 script:
   - mix test
diff --git a/README.md b/README.md
index ebf3d72..3e73108 100644
--- a/README.md
+++ b/README.md
@@ -12,17 +12,24 @@ Hex: https://hex.pm/packages/ielixir.
 
 Please see generated documentation for implementation details: http://hexdocs.pm/ielixir/.
 
-##Getting Started
+## Getting Started
 
 ### Configure Jupyter
 
+I recommend you to use `virtualenv` and `virtualenvwrapper` for this project to isolate dependencies between this and other projects however you may also work without this if you don't like this.
+```Bash
+$ pip install virtualenv virtualenvwrapper
+```
+Now you need to load `virtualenvwrapper.sh` script into your current environment. I recommend you to add this like as well to the `~/.bash_profile.sh` script to have this script loaded every time you open fresh bash.
+```Bash
+$ source /usr/local/bin/virtualenvwrapper.sh
+```
+
+Now using our new tools we can easily create isolated virtual environment for jupyter installation.
 ```Bash
-$ git clone https://github.com/jupyter/notebook.git
-$ cd notebook
 $ mkvirtualenv jupyter-env
 $ workon jupyter-env
-(jupyter-env) $ pip install --pre -e .
-(jupyter-env) $ pip install jupyter-console
+(jupyter-env) $ pip install jupyter
 ```
 
 ### Configure IElixir
@@ -36,24 +43,15 @@ $ mix test
 $ MIX_ENV=prod mix compile
 ```
 
-#### Prepare `kernel.json` file
-
-Create and edit `kernel.json` file
+There may be also need to install rebar before IElixir installation, you can do this with command:
 ```Bash
-$ mkdir ~/.ipython/kernels/ielixir
-$ vim ~/.ipython/kernels/ielixir/kernel.json
+mix local.rebar --force
 ```
+After this you may need to add `~/.mix/` to your `$PATH` variable if you don't have `rebar` visible yet outside `~/.mix/` directory.
 
-Put into the file following content:
-```Bash
-{
-  "argv": ["{PATH_TO_YOUR_IELIXIR_PROJECT}/start_script.sh", "{connection_file}"],
-  "display_name": "ielixir",
-  "language": "Elixir"
-}
-```
+#### Install Kernel
 
-or simply run installation script to create this file:
+Simply run installation script to create file `kernel.json` file in `./resouces` directory and bind it to the jupyter:
 ```Bash
 $ ./install_script.sh
 ```
@@ -78,6 +76,14 @@ Evaluate some commands in your new notebook:
 
 ![IElixir basics](/resources/jupyter_ielixir_basics.png?raw=true)
 
+### Developement mode
+
+If you want to see requests passing logs please use `dev` environment to see what is happening in the background.
+
+```Bash
+(jupyter-env) $ MIX_ENV=dev jupyter console --kernel ielixir
+```
+
 ### Generate documentation
 
 Run following command and see `doc` directory for generated documentation in HTML:
@@ -85,6 +91,14 @@ Run following command and see `doc` directory for generated documentation in HTM
 $ mix docs
 ```
 
+### Some issues
+
+There may be need to run IElixir kernel with specific erlang attribute which can be turned on by setting variable:
+```Bash
+ELIXIR_ERL_OPTIONS="-smp enable"
+```
+This option has been included inside `install_script.sh` and `start_script.sh` scripts.
+
 ### References
 
 Some useful articles:
diff --git a/install_script.sh b/install_script.sh
index 3ced994..ffdf6d4 100755
--- a/install_script.sh
+++ b/install_script.sh
@@ -5,13 +5,24 @@ then
   export MIX_ENV=prod
 fi
 
-mkdir -p ~/.ipython/kernels/ielixir/
+# Provide setup according to kernel-spec
+# https://jupyter-client.readthedocs.io/en/latest/kernels.html#kernel-specs
+
+UNAMESTR=$(UNAME)
+KERNEL_SPEC="./resources/ielixir"
+NAME="ielixir"
+
 START_SCRIPT_PATH=$(cd `dirname "$0"` && pwd)/start_script.sh
+
+# help links and language info is provided on connection
+# by the client
 CONTENT='{
    "argv": ["'${START_SCRIPT_PATH}'", "{connection_file}"],
-                "display_name": "ielixir",
-                "language": "Elixir"
+   "display_name": "Elixir",
+   "language": "Elixir"
 }'
-echo $CONTENT > ~/.ipython/kernels/ielixir/kernel.json
+echo $CONTENT | python -m json.tool > $KERNEL_SPEC/kernel.json
 
-mix ecto.migrate -r IElixir.Repo
+# for global install remove the --user flag
+jupyter kernelspec install --user --replace --name=$NAME $KERNEL_SPEC
+ELIXIR_ERL_OPTIONS="-smp enable" mix ecto.migrate -r IElixir.Repo
diff --git a/lib/ielixir/sandbox.ex b/lib/ielixir/sandbox.ex
index 22f8f77..67226db 100644
--- a/lib/ielixir/sandbox.ex
+++ b/lib/ielixir/sandbox.ex
@@ -99,8 +99,11 @@ defmodule IElixir.Sandbox do
       iex> IElixir.Sandbox.execute_code(%{"code" => "hd []"})
       {:error, "ArgumentError", ["** (ArgumentError) \"argument error\""]}
 
-      iex> IElixir.Sandbox.execute_code(%{"code" => "\"a\" + 5"})
-      {:error, "ArithmeticError", ["** %ArithmeticError{}"]}
+      iex> abc = IElixir.Sandbox.execute_code(%{"code" => "\"a\" + 5"})
+      iex> elem(abc, 0)
+      :error
+      iex> elem(abc, 1)
+      "ArithmeticError"
 
   """
   @spec execute_code(map) :: execution_response
diff --git a/lib/ielixir/socket/shell.ex b/lib/ielixir/socket/shell.ex
index 035cc74..4c90b6f 100644
--- a/lib/ielixir/socket/shell.ex
+++ b/lib/ielixir/socket/shell.ex
@@ -51,7 +51,7 @@ defmodule IElixir.Socket.Shell do
         "version" => inspect(version),
         "mimetype" => "text/x-elixir",
         "file_extension" => "ex",
-        "pygments_lexer" => "pygments.lexers.erlang.ElixirLexer",
+        "pygments_lexer" => "elixir",
         "codemirror_mode" => "erlang",
         "nbconvert_exporter" => ""
       },
diff --git a/lib/ielixir/utils.ex b/lib/ielixir/utils.ex
index 2222f11..5b4890a 100644
--- a/lib/ielixir/utils.ex
+++ b/lib/ielixir/utils.ex
@@ -20,8 +20,9 @@ defmodule IElixir.Utils do
   """
   @spec parse_connection_file(String.t) :: map
   def parse_connection_file(connection_file) do
-    File.read!(connection_file)
-      |> Poison.Parser.parse!
+    connection_file
+    |> File.read!
+    |> Poison.Parser.parse!
   end
 
   @doc false
diff --git a/mix.exs b/mix.exs
index 39f854d..b51e8b8 100644
--- a/mix.exs
+++ b/mix.exs
@@ -1,36 +1,36 @@
 defmodule IElixir.Mixfile do
   use Mix.Project
 
-  @version "0.9.5"
+  @version "0.9.6"
 
   def project do
     [app: :ielixir,
      version: @version,
      source_url: "https://github.com/pprzetacznik/IElixir",
      name: "IElixir",
-     elixir: ">= 1.1.0 and < 1.4.0",
+     elixir: ">= 1.1.0 and < 1.5.0",
      build_embedded: Mix.env == :prod,
      start_permanent: Mix.env == :prod,
-     deps: deps,
+     deps: deps(),
      description: """
      Jupyter's kernel for Elixir programming language
      """,
-     package: package,
+     package: package(),
      test_coverage: [tool: ExCoveralls]]
   end
 
   def application do
     [mod: {IElixir, []},
-     applications: [:logger, :iex, :sqlite_ecto, :ecto]]
+     applications: [:logger, :iex, :sqlite_ecto, :ecto, :erlzmq, :poison, :uuid]]
   end
 
   defp deps do
-    [{:erlzmq, github: "zeromq/erlzmq2"},
-     {:poison, github: "devinus/poison", override: true},
+    [{:erlzmq, github: "zeromq/erlzmq2", compile: "make"},
+     # {:poison, github: "devinus/poison", override: true},
+     {:poison, "~> 3.1", override: true},
      {:uuid, github: "okeuday/uuid"},
 
-     {:sqlite_ecto, "~> 0.5.0"},
-     {:ecto, "~> 0.15.0"},
+     {:sqlite_ecto, "~> 1.0.0"},
 
      # Docs dependencies
      {:earmark, "~> 0.1", only: :docs},
diff --git a/mix.lock b/mix.lock
index 750f621..af7b53c 100644
--- a/mix.lock
+++ b/mix.lock
@@ -1,23 +1,24 @@
-%{"certifi": {:hex, :certifi, "0.4.0", "a7966efb868b179023618d29a407548f70c52466bf1849b9e8ebd0e34b7ea11f", [:rebar3], []},
-  "decimal": {:hex, :decimal, "1.1.1", "a8ff5b673105e6cdaca96f799aeefc6f07142881b616c65db16e14e556b16e76", [:mix], []},
+%{"certifi": {:hex, :certifi, "1.2.1", "c3904f192bd5284e5b13f20db3ceac9626e14eeacfbb492e19583cf0e37b22be", [:rebar3], []},
+  "decimal": {:hex, :decimal, "1.1.2", "79a769d4657b2d537b51ef3c02d29ab7141d2b486b516c109642d453ee08e00c", [:mix], []},
   "earmark": {:hex, :earmark, "0.2.1", "ba6d26ceb16106d069b289df66751734802777a3cbb6787026dd800ffeb850f3", [:mix], []},
-  "ecto": {:hex, :ecto, "0.15.0", "0f070eca5dc452901379a761004f995f721319a5d431aa9e7b8a8e26b33d3fc1", [:mix], [{:sbroker, "~> 0.7", [hex: :sbroker, optional: true]}, {:postgrex, "~> 0.9.1", [hex: :postgrex, optional: true]}, {:poolboy, "~> 1.4", [hex: :poolboy, optional: false]}, {:poison, "~> 1.0", [hex: :poison, optional: true]}, {:mariaex, "~> 0.4.1", [hex: :mariaex, optional: true]}, {:decimal, "~> 1.0", [hex: :decimal, optional: false]}]},
+  "ecto": {:hex, :ecto, "1.1.9", "6f30e4662d540c794048e62a04926c1d3c892a2ba4704fe1e19d4a9b5b2f881e", [:mix], [{:decimal, "~> 1.0", [hex: :decimal, optional: false]}, {:mariaex, "~> 0.5.0 or ~> 0.6.0", [hex: :mariaex, optional: true]}, {:poison, "~> 1.0 or ~> 2.0", [hex: :poison, optional: true]}, {:poolboy, "~> 1.4", [hex: :poolboy, optional: false]}, {:postgrex, "~> 0.11.0", [hex: :postgrex, optional: true]}, {:sbroker, "~> 0.7", [hex: :sbroker, optional: true]}]},
   "erlzmq": {:git, "https://github.com/zeromq/erlzmq2.git", "573d583930c4b1134e504bec83926d188112b401", []},
-  "esqlite": {:hex, :esqlite, "0.2.2", "e4e8b39062a075e0bd4756b894dd2aa8edbf94c9081c1fb5c72dc705bf2f2d88", [:rebar, :make], []},
-  "ex_doc": {:hex, :ex_doc, "0.11.4", "a064bdb720594c3745b94709b17ffb834fd858b4e0c1f48f37c0d92700759e02", [:mix], [{:earmark, "~> 0.1.17 or ~> 0.2", [hex: :earmark, optional: true]}]},
-  "excoveralls": {:hex, :excoveralls, "0.3.11", "cd1abaf07db5bed9cf7891d86470247c8b3c8739d7758679071ce1920bb09dbc", [:mix], [{:hackney, ">= 0.12.0", [hex: :hackney, optional: false]}, {:exjsx, "~> 3.0", [hex: :exjsx, optional: false]}]},
-  "exjsx": {:hex, :exjsx, "3.2.0", "7136cc739ace295fc74c378f33699e5145bead4fdc1b4799822d0287489136fb", [:mix], [{:jsx, "~> 2.6.2", [hex: :jsx, optional: false]}]},
-  "hackney": {:hex, :hackney, "1.6.0", "8d1e9440c9edf23bf5e5e2fe0c71de03eb265103b72901337394c840eec679ac", [:rebar3], [{:ssl_verify_fun, "1.1.0", [hex: :ssl_verify_fun, optional: false]}, {:mimerl, "1.0.2", [hex: :mimerl, optional: false]}, {:metrics, "1.0.1", [hex: :metrics, optional: false]}, {:idna, "1.2.0", [hex: :idna, optional: false]}, {:certifi, "0.4.0", [hex: :certifi, optional: false]}]},
-  "idna": {:hex, :idna, "1.2.0", "ac62ee99da068f43c50dc69acf700e03a62a348360126260e87f2b54eced86b2", [:rebar3], []},
+  "esqlite": {:hex, :esqlite, "0.2.3", "1a8b60877fdd3d50a8a84b342db04032c0231cc27ecff4ddd0d934485d4c0cd5", [:rebar3], []},
+  "ex_doc": {:hex, :ex_doc, "0.12.0", "b774aabfede4af31c0301aece12371cbd25995a21bb3d71d66f5c2fe074c603f", [:mix], [{:earmark, "~> 0.2", [hex: :earmark, optional: false]}]},
+  "excoveralls": {:hex, :excoveralls, "0.3.11", "cd1abaf07db5bed9cf7891d86470247c8b3c8739d7758679071ce1920bb09dbc", [:mix], [{:exjsx, "~> 3.0", [hex: :exjsx, optional: false]}, {:hackney, ">= 0.12.0", [hex: :hackney, optional: false]}]},
+  "exjsx": {:hex, :exjsx, "3.2.1", "1bc5bf1e4fd249104178f0885030bcd75a4526f4d2a1e976f4b428d347614f0f", [:mix], [{:jsx, "~> 2.8.0", [hex: :jsx, optional: false]}]},
+  "hackney": {:hex, :hackney, "1.8.6", "21a725db3569b3fb11a6af17d5c5f654052ce9624219f1317e8639183de4a423", [:rebar3], [{:certifi, "1.2.1", [hex: :certifi, optional: false]}, {:idna, "5.0.2", [hex: :idna, optional: false]}, {:metrics, "1.0.1", [hex: :metrics, optional: false]}, {:mimerl, "1.0.2", [hex: :mimerl, optional: false]}, {:ssl_verify_fun, "1.1.1", [hex: :ssl_verify_fun, optional: false]}]},
+  "idna": {:hex, :idna, "5.0.2", "ac203208ada855d95dc591a764b6e87259cb0e2a364218f215ad662daa8cd6b4", [:rebar3], [{:unicode_util_compat, "0.2.0", [hex: :unicode_util_compat, optional: false]}]},
   "inch_ex": {:hex, :inch_ex, "0.4.0", "27829de2227edfba8fa5c431088578685c0956128b40522957077963e563e868", [:mix], [{:poison, "~> 1.2", [hex: :poison, optional: false]}]},
-  "jsx": {:hex, :jsx, "2.6.2", "213721e058da0587a4bce3cc8a00ff6684ced229c8f9223245c6ff2c88fbaa5a", [:mix, :rebar], []},
+  "jsx": {:hex, :jsx, "2.8.2", "7acc7d785b5abe8a6e9adbde926a24e481f29956dd8b4df49e3e4e7bcc92a018", [:mix, :rebar3], []},
   "metrics": {:hex, :metrics, "1.0.1", "25f094dea2cda98213cecc3aeff09e940299d950904393b2a29d191c346a8486", [:rebar3], []},
   "mimerl": {:hex, :mimerl, "1.0.2", "993f9b0e084083405ed8252b99460c4f0563e41729ab42d9074fd5e52439be88", [:rebar3], []},
   "pipe": {:hex, :pipe, "0.0.2", "eff98a868b426745acef103081581093ff5c1b88100f8ff5949b4a30e81d0d9f", [:mix], []},
-  "poison": {:git, "https://github.com/devinus/poison.git", "7a7882e8b9877c8868eabaa6b005c813f8d6dc6b", []},
+  "poison": {:hex, :poison, "3.1.0", "d9eb636610e096f86f25d9a46f35a9facac35609a7591b3be3326e99a0484665", [:mix], []},
   "poolboy": {:hex, :poolboy, "1.5.1", "6b46163901cfd0a1b43d692657ed9d7e599853b3b21b95ae5ae0a777cf9b6ca8", [:rebar], []},
-  "quickrand": {:hex, :quickrand, "1.5.2-rc1", "1345b1652dadc520692ee55f4d996d74d399a86c0265b53a24c8540803929cb4", [:rebar], []},
-  "sqlite_ecto": {:hex, :sqlite_ecto, "0.5.0", "1e2e0c4aa3b8137cef08274c694d289c56887a52bb0fb4c856413c30045df8ef", [:mix], [{:sqlitex, "~> 0.8", [hex: :sqlitex, optional: false]}, {:poison, "~> 1.0", [hex: :poison, optional: false]}, {:ecto, "~> 0.15.0", [hex: :ecto, optional: false]}]},
-  "sqlitex": {:hex, :sqlitex, "0.8.3", "226901fe73fb9d74a5bc742594074dc3cac725ee632d595a704dd8bf92661044", [:mix], [{:pipe, "~> 0.0.2", [hex: :pipe, optional: false]}, {:esqlite, "~> 0.2.0", [hex: :esqlite, optional: false]}, {:decimal, "~> 1.1.0", [hex: :decimal, optional: false]}]},
-  "ssl_verify_fun": {:hex, :ssl_verify_fun, "1.1.0", "edee20847c42e379bf91261db474ffbe373f8acb56e9079acb6038d4e0bf414f", [:rebar, :make], []},
-  "uuid": {:git, "https://github.com/okeuday/uuid.git", "fdd2861e2f5049c25d44ff342c9756ce64a2a783", []}}
+  "quickrand": {:hex, :quickrand, "1.7.1", "b0c2a41d08c955f055c44bed357660de443cd9068a33aba530076910b7333659", [:rebar3], []},
+  "sqlite_ecto": {:hex, :sqlite_ecto, "1.0.0", "63c1da849c5862c04207928b4a465bdf5e70e84151bed1cdc29d426bd8d8f2ee", [:mix], [{:ecto, "~> 1.0", [hex: :ecto, optional: false]}, {:poison, "~> 1.0", [hex: :poison, optional: false]}, {:sqlitex, "~> 0.8", [hex: :sqlitex, optional: false]}]},
+  "sqlitex": {:hex, :sqlitex, "0.8.0", "e0013cc7b70723db22c2ac8d318fa434d062242075296499c4c76469b7c22e78", [:mix], [{:decimal, "~> 1.1.0", [hex: :decimal, optional: false]}, {:esqlite, "~> 0.2.0", [hex: :esqlite, optional: false]}, {:pipe, "~> 0.0.2", [hex: :pipe, optional: false]}]},
+  "ssl_verify_fun": {:hex, :ssl_verify_fun, "1.1.1", "28a4d65b7f59893bc2c7de786dec1e1555bd742d336043fe644ae956c3497fbe", [:make, :rebar], []},
+  "unicode_util_compat": {:hex, :unicode_util_compat, "0.2.0", "dbbccf6781821b1c0701845eaf966c9b6d83d7c3bfc65ca2b78b88b8678bfa35", [:rebar3], []},
+  "uuid": {:git, "https://github.com/okeuday/uuid.git", "3b4a500963d42195db3ad4b90fda94d2fb75b7e9", []}}
diff --git a/resources/ielixir/logo-32x32.png b/resources/ielixir/logo-32x32.png
new file mode 100644
index 0000000..9fad970
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diff --git a/resources/ielixir/logo-64x64.png b/resources/ielixir/logo-64x64.png
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index 0000000..0dfad03
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diff --git a/resources/logo-32x32.png b/resources/logo-32x32.png
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diff --git a/resources/logo-64x64.png b/resources/logo-64x64.png
new file mode 100644
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diff --git a/start_script.sh b/start_script.sh
index b92abb4..0bea38e 100755
--- a/start_script.sh
+++ b/start_script.sh
@@ -12,5 +12,4 @@ then
 fi
 IELIXIR_PATH=$(cd `dirname "$0"` && pwd)/
 cd $IELIXIR_PATH
-CONNECTION_FILE=$1 mix run --no-halt
-
+ELIXIR_ERL_OPTIONS="-smp enable" CONNECTION_FILE=$1 mix run --no-halt