Merge pull request #221 from pandamicro/master

Issue #4589: Fix bugs
Update introduction of repo
Update auto bindings manually
Issue #4589: Make engine classes extendable in JSB pack 1
	ClippingNode
	AltasNode
	EventManager
	Labels
	Animation
	GLProgram
	DrawNode
	Armature
Closed #4663: Fix a bug that TextureCache Tests calls TextureCache.addImage function error
Merge pull request #225 from VisualSJ/master

Closed #4663: Fix a bug that TextureCache Tests calls TextureCache.addImage
Update sub modules
Update manual bindings
Merge branch 'master' of https://github.com/cocos2d/cocos2d-js