fix coding style
fixed: if position AND uvs were given for a face, a "zero" normal wasn't pushed as it should be.
Merge remote-tracking branch 'origin/dev' into dev
Merge branch 'dev' of github.com:aerys/minko-obj into dev
fix: Bug #1086 Out of range exception in ObjDocument
Fixed an issue to prevent some cases when the MTL file would be loaded before adding the complete callback.
Also updated the material handling (for specular and diffuse tinting, might need to update again if we support Ambient as a color).
changed ParserOptions.effect to ParserOptions.material according to Feature #1108 ParserOptions.defaultEffect should be ParserOptions.defaultMaterial
added a check on ParserOptions.vertexStreamUsage and ParserOptions.indexStreamUsage to prevent a crash when these options are not set to read/write
Update .gitignore.