Merge pull request #59 from gwenael-hagenmuller/master

Fixed operators priority issue
v1.4.1
Merge branch 'master' of https://github.com/BabylonJS/Babylon.js
v1.4.2
v1.4.3
Adding obj exporter
Adding OBJ exporter
License change
Update readme.md
v1.5.0
Fix bug incremental loading + importMesh

I was trying to use importMesh with incremental loading, but I always got a 404 when trying to fetch each mesh files.
Babylon tries to fetch url like this : http://localhost/undefinedMeshFileName.babylonmeshdata, in parseMesh method (l 275), parsedMesh.delayLoadingFile is not null (l 304), but rootUrl is not found, so setting "undefinedMeshFileName.babylonmeshdata" in mesh.delayLoadingFile (l 306), so adding rootUrl in parseMesh call (l 503) seems to fix this bug.
Merge pull request #75 from nicolas-obre/patch-1

Fix bug incremental loading + importMesh
Animations Definitions files updated
Begin adding Bones definition files
makeIncremental tool
Merge branch 'master' of https://github.com/BabylonJS/Babylon.js
bone work done
Camera files created and updated
huge commit; basically all updated
Merge pull request #77 from jroblak/typescriptUpdate

Typescript update