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
Update sub modules
Update manual bindings
Merge branch 'master' of https://github.com/cocos2d/cocos2d-js
Merge pull request #226 from pandamicro/master

Issue #4589: Make engine classes extendable in JSB pack 1