Merge pull request #556 from jtwigg/develop

Develop
Updates Cocos2D
Merge branch 'develop' of github.com:apportable/SpriteBuilder into develop
Updates error messages.
Enable fullscreen mode
All position types supported in snap
Removed targets #559
Merge pull request #566 from cocojoe/develop

All position types working in snap
Merge pull request #558 from mikehaney24/develop

Enable fullscreen mode
Removed sound initialization at startup as it was causing a bunch of exceptions being thrown.
Updates Cocos2D
Resets user defaults when resetting SpriteBuilder
fix keyframes not being added.
Merge branch 'develop' of https://github.com/spritebuilder/SpriteBuilder into develop