[Example] Add controller example

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

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;
+    }
+);