add BillBorad and BillBoardTest
Merge pull request #92 from songmiao/billboard

add BillBorad and BillBoardTest
Merge branch 'v3' of https://github.com/cocos2d/cocos2d-x into billboard

Conflicts:
	cocos/2d/libcocos2d.vcxproj.filters
	tests/cpp-tests/Classes/Sprite3DTest/Sprite3DTest.cpp
	tests/cpp-tests/Classes/Sprite3DTest/Sprite3DTest.h
Merge pull request #93 from songmiao/billboard

Billboard Merge v3
add BillBoard to iOS project
merge cocos
Merge branch 'billboard' of https://github.com/super626/cocos2d-x into billboard
Merge branch 'billboard' of https://github.com/super626/cocos2d-x into billboard
Merge branch 'billboard' of https://github.com/super626/cocos2d-x into billboard
calculated Z in View
Transparent Render
Finished BillBorad
Tab Format
repaired BillBoard Depth Test
tab format
Added getInverseViewMatrix
Merge branch 'billboard' of https://github.com/super626/cocos2d-x into billboard

Conflicts:
	cocos/2d/libcocos2d.vcxproj.filters
resolve conflict
added mesh command
Added testing Model Number
test on Android