PG - fix for v2.5

Playground/index2_5.html

@@ -18,8 +18,8 @@
     <!-- Babylon.js -->
     <script src="https://www.babylonjs.com/cannon.js"></script>
     <script src="https://www.babylonjs.com/Oimo.js"></script>
-    <script src="https://www.babylonjs.com/versions/babylon.2.5.js"></script>
-    <script src="https://www.babylonjs.com/versions/babylon.2.5.canvas2d.js"></script>
+    <script src="http://cdn.babylonjs.com/2-5/babylon.js"></script>
+    <script src="https://www.babylonjs.com/babylon.canvas2d.js"></script>
     <script src="https://www.babylonjs.com/babylon.inspector.bundle.js"></script>
 
     <script src="https://www.babylonjs.com/lib/babylon.fireMaterial.min.js"></script>