doc: update readme

README.md

@@ -7,23 +7,64 @@ This kernel enables you to run [Apache Camel](https://camel.apache.org/) routes
 - [Jupyter](https://jupyter.org/install)
 - Java >= 11
 
-## Supported route languages
+## Supported Camel route languages
 
-Currently only [JavaScript](https://camel.apache.org/camel-k/latest/languages/javascript.html) is supported.
+All [route languages](https://camel.apache.org/camel-k/latest/languages/languages.html) supported by [Camel K](https://camel.apache.org/camel-k/latest/index.html) except YAML are supported by ICamel. See the following links to learn how to write a Camel route with each language.
 
-## Installing
+- [Groovy](https://camel.apache.org/camel-k/latest/languages/groovy.html)
+- [Kotlin](https://camel.apache.org/camel-k/latest/languages/kotlin.html)
+- [JavaScript](https://camel.apache.org/camel-k/latest/languages/javascript.html)
+- [Java](https://camel.apache.org/camel-k/latest/languages/java.html)
+- [XML](https://camel.apache.org/camel-k/latest/languages/xml.html)
 
-Build this project:
+The opinionated default language for ICamel is JavaScript. To use other languages than JavaScript or XML, prepend a comment line `// language=...` at the beginning of each cell.
 
-    mvn clean install
+- Groovy
+
+  ```groovy
+  // language=groovy
+  from('timer:tick')
+      .process { it.in.body = 'Hello Camel K!' }
+      .to('log:info')
+  ```
+
+- Kotlin
+
+  ```kotlin
+  // language=kts
+  from("timer:tick")
+      .process { e -> e.getIn().body = "Hello Camel K!" }
+      .to("log:info")
+  ```
+
+- java
+
+  ```java
+  // language=java
+  import org.apache.camel.builder.RouteBuilder;
+
+  public class Sample extends RouteBuilder {
+      @Override
+      public void configure() throws Exception {
+          from("timer:tick")
+              .setBody()
+                .constant("Hello Camel K!")
+              .to("log:info");
+      }
+  }
+  ```
+
+## Installing
+
+Download the latest `icamel-0.x.jar` from https://github.com/tadayosi/icamel/packages.
 
 Then create a directory `camel` under the Jupyter kernels directory:
 
     mkdir `jupyter --data-dir`/kernels/camel
 
-and copy `target/icamel-0.1-SNAPSHOT.jar` into the directory:
+and copy `target/icamel-0.x.jar` into the directory:
 
-    cp target/icamel-0.1-SNAPSHOT.jar `jupyter --data-dir`/kernels/camel/
+    cp target/icamel-0.x.jar `jupyter --data-dir`/kernels/camel/
 
 Finally, create a file `kernel.json` with the following content under the `camel` kernel directory. Note `<your-camel-kernel-dir>` needs to be substituted with the actual path (e.g. `/home/username/.local/share/jupyter/kernels/camel`):
 
@@ -32,7 +73,7 @@ Finally, create a file `kernel.json` with the following content under the `camel
   "argv": [
     "java",
     "-jar",
-    "<your-camel-kernel-dir>/icamel-0.1-SNAPSHOT.jar",
+    "<your-camel-kernel-dir>/icamel-0.x.jar",
     "{connection_file}"
   ],
   "display_name": "Camel",
@@ -42,3 +83,9 @@ Finally, create a file `kernel.json` with the following content under the `camel
   }
 }
 ```
+
+## Build from source
+
+Run the following command:
+
+    mvn clean install

kernel.json

@@ -2,7 +2,7 @@
   "argv": [
     "java",
     "-jar",
-    "${user.home}/.local/share/jupyter/kernels/camel/icamel-${project.version}.jar",
+    "<your-camel-kernel-dir>/icamel-0.x.jar",
     "{connection_file}"
   ],
   "display_name": "Camel",