added includemod example for javascript

accordingly to "http://vertx.io/mods_manual.html#including-the-resources-of-modules"

src/modules/javascript/includemod/mods/com.acme~common-stuff~v1.0/bar.js

@@ -0,0 +1,5 @@
+var sayHello = function(name) {
+  return "Hello " + name;
+};
+
+module.exports.sayHello = sayHello;

src/modules/javascript/includemod/mods/com.acme~common-stuff~v1.0/mod.json

@@ -0,0 +1,3 @@
+{
+
+}

src/modules/javascript/includemod/mods/com.acme~common-stuff~v1.0/test.js

@@ -0,0 +1,8 @@
+//Test if requiring bar lib works locally
+var bar = require("./bar.js");
+
+if (bar.sayHello("User") == "Hello User") {
+  console.log("requiring bar.js works");
+} else {
+  console.log("requiring bar.js didn't work");
+}

src/modules/javascript/includemod/mods/com.acme~module1~v1.0/mod.json

@@ -0,0 +1,4 @@
+{
+ "includes": "com.acme~common-stuff~v1.0",
+ "main": "run_module_1.js"
+}

src/modules/javascript/includemod/mods/com.acme~module1~v1.0/run_module_1.js

@@ -0,0 +1,15 @@
+var vertx = require('vertx');
+var console = require('vertx/console');
+var bar = require('bar.js');
+
+var server = vertx.createHttpServer();
+
+server.requestHandler(function(request) {
+  request.response.end(bar.sayHello("User"));
+});
+
+server.listen(8181, 'localhost', function(err) {
+  if (!err) {
+    console.log("Server listening on 8181");
+  }
+});