Fix CCB Reader crash on reading unaligned float*
fix ttf shadow crash
Refresh TTF Shadow upon enter if percentage type. Update shadow texture is in points
Merge branch 'develop-v3' of https://github.com/apportable/cocos2d-iphone into develop-v3

Conflicts:
	cocos2d-ui/CCBReader/CCBReader.m
Merge pull request #481 from jtwigg/develop-v3

Develop v3 - ShadowOffset addtition