Update Blender-POD Batch Converter tool
Read and write color content to and from surfaces and textures.

Add pixel reading and writing to surfaces. Add pixel writing to textures. Clear
buffers through surface. Move surface activation to visitor and track surface
within visitor. Lazy init the surface in the visitor. Node selection on touch
reads pixel from surface. Add PiP window in TV screen of CC3DemoMashUp using
surface reading & writing. CC3Layer now requires a CC3ViewController.
Merge branch 'master' of https://github.com/medvedNick/cocos3d
Fixes to batch POD exporting.