[Example] Add controller example

Add example showing declarative registration of
controllers with Angular. WTD-518.

example/builtins/bundle.json

@@ -3,7 +3,11 @@
     "description": "Example showing how to declare extensions with built-in support from Angular.",
     "extensions": {
         "controllers": [
-
+            {
+                "key": "ExampleController",
+                "implementation": "ExampleController.js",
+                "depends": [ "$scope" ]
+            }
         ],
         "directives": [
 

example/builtins/res/templates/example.html

@@ -1 +1,2 @@
 <p>Hello, world! I am the default route.</p>
+<p ng-controller="ExampleController">My controller has told me: "{{phrase}}"</p>

example/builtins/src/ExampleController.js

@@ -0,0 +1,21 @@
+/*global define,Promise*/
+
+/**
+ * Module defining ExampleController. Created by vwoeltje on 11/4/14.
+ */
+define(
+    [],
+    function () {
+        "use strict";
+
+        /**
+         *
+         * @constructor
+         */
+        function ExampleController($scope) {
+            $scope.phrase = "I am a controller.";
+        }
+
+        return ExampleController;
+    }
+);