📚 Update package documentation

docs/getting_started.rst

@@ -7,13 +7,25 @@ Getting Started
    :width: 600
    :alt: Terminal
 
+
+Install
+^^^^^^^^^
+
+You can install the program with the following command:  
+
+.. code:: bash
+
+  $ pip install yt2mp3
+
 Prerequisites  
---------------
+-------------
 
 The program only requires that you have Python 3.4+ and `ffmpeg <https://www.ffmpeg.org/>`_ or `libav <https://www.libav.org/>`_ installed. More installation information is available on the `additional setup <http://yt2mp3.rtfd.io>`_ page.
 
+----------------------
+
 Usage  
--------
+^^^^^^^
 
 Once installed, the program can be executed via the command-line as follows:
 
@@ -24,7 +36,7 @@ Once installed, the program can be executed via the command-line as follows:
 When the program is finished, you can find the resulting MP3 file in your *Downloads* directory, with the following file-structure ``Music/{artist}/{track}.mp3``.
 
 Options
-^^^^^^^^
+--------
 
 .. list-table::
   :widths: 25 75
@@ -55,4 +67,22 @@ Options
   * - ``-h, --help``
     - Display information on usage and functionality
 
+-----------------
+
+Contributing
+^^^^^^^^^^^^^
+
+If you'd like to contribute to the project, you can download and install the program with the following commands:  
+
+.. code:: bash
+
+  # Clone the repository
+  $ git clone https://github.com/tterb/yt2mp3
+
+  # Navigate to the directory
+  $ cd yt2mp3
+
+  # Install program dependencies
+  $ pip install -r requirements.txt
+  
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