Merge pull request #1510 from abow/bone_controllers

added demo links to what's new

dist/preview release/what's new.md

@@ -6,7 +6,8 @@
 - Babylon.js now supports right handed system with ```scene.useRightHandedSystem = true``` ([deltakosh](https://github.com/deltakosh))
 - Babylon.js is now compiled with [optimize-js](https://github.com/nolanlawson/optimize-js) to get faster initial load ([deltakosh](https://github.com/deltakosh))
 - Canvas2D moved to a separate folder in main repo. Now you need to also include babylon.cavans2d.js to get Canvas@D feature ([deltakosh](https://github.com/deltakosh))
-- Added BoneIKController and BoneLookController ([abow](https://github.com/abow))
+- New BoneIKController [Demo](http://www.babylonjs-playground.com/#1EVNNB#6) - ([abow](https://github.com/abow))
+- New BoneLookController [Demo](http://www.babylonjs-playground.com/#1B1PUZ#13) - ([abow](https://github.com/abow))
 
 ### Updates
 - New `Texture.LoadFromDataString()` to help loading base64 encoded textures ([deltakosh](https://github.com/deltakosh))