<ADD> coco2d/core/CCDrawingPrimitivesWebGL.js
<MODIFY> coco2d/core/CCDrawingPrimitivesCanvas.js
Merge pull request #34 from dazhaode/develop

<ADD> coco2d/core/CCDrawingPrimitivesWebGL.js&<MODIFY> coco2d/core/CCDrawingPrimitivesCanvas.js