[docs] Add documentation on the network extension of Janus.

Signed-off-by: Stéphane Galland <galland@arakhne.org>

docs/io.sarl.docs.markdown/src/main/documentation/tools/JanusNetworkExtension.md

@@ -0,0 +1,66 @@
+# Extending the Janus SRE with Network Connection
+
+[:Outline:]
+
+[:Include:](./janus.inc)
+
+By default, Janus does not provide a support for exchanging events over a computer
+network. For enabling this communication feature, a specific Janus extension is needed.
+
+This documentation page describes the extension [:networkextensionname:] that adds the communication
+among Janus nodes over a computer network.
+
+The extension described on this page was defined according to the [standard method for extending Janus](../tutorials/SreExtension.md).
+
+## General Principles of the Extension
+
+[:Include:](./hazelcast.inc)
+
+## Maven Inclusion
+
+In order to include the networking extension into your project, you could add the following Maven dependency.
+
+```xml
+ <project>
+   ...
+    <properties>
+       ...
+       <janus.version>[:janus.version2!]</janus.version>
+    </properties>
+    ...
+    <dependencies>
+       ...
+       <dependency>
+          <groupId>io.janusproject</groupId>
+          <artifactId>[:networkextensionname](io.janusproject.kernel.network)</artifactId>
+          <version>${janus.version}</version>
+       </dependency>
+       ...
+    </dependencies>
+    ...
+ </project>
+```
+
+The [:networkextensionname:] maven module provides the network extension **AND** all the libraries related to the Janus SRE.
+
+
+## Configuration of the plugin
+
+The following table provides a short description of the configuration parameters that are related to this networking
+extension.
+More details could be obtain by calling your Janus-based software with the command-line option `-H` for example.
+
+
+| Section | Property | Type | Description |
+| ------- | -------- | ---- | ----------- |
+[:Dynamic:]{
+	runShellSilently(
+		makeExecName("..", "..", "..", "..", "..", "..", "sre", "io.janusproject", "io.janusproject.kernel.network", "target", "janusnode"),
+		"generatemarkdownconfighelp".makeCliOption,
+		"generatemarkdownconfighelp.root".makeCliDefinition("srenetwork"))
+
+}
+
+
+[:Include:](../legal.inc)
+