Update what's new.md

dist/preview release/what's new.md

@@ -43,6 +43,7 @@
     - new Heightmap Impostor for Cannon.js physics engine. [PR](https://github.com/BabylonJS/Babylon.js/pull/78), [Demo] (http://www.babylonjs-playground.com/#D3LQD#3) ([RaananW](https://github.com/RaananW))
     - A plane mesh can be created with a source plane (math). [PR](https://github.com/BabylonJS/Babylon.js/pull/779) ([RaananW](https://github.com/RaananW))
     - AbstractMesh.onPhysicsCollide will be triggered when a physics-enabled mesh collides against another. [PR](https://github.com/BabylonJS/Babylon.js/pull/806) ([RaananW](https://github.com/RaananW))
+    - Added scene onPointerMove public callback. [PR](https://github.com/BabylonJS/Babylon.js/pull/810) ([RaananW](https://github.com/RaananW))
   - **Bug fixes**
     - Fixed a bug with spherical mapping ([deltakosh](https://github.com/deltakosh)) 
     - Fixed a bug with clone and createInstance which was forcing the recomputation of bounding boxes ([deltakosh](https://github.com/deltakosh))