add nil check return when no ccb is loaded and drag and drop occurs.,
Merge branch 'develop' of https://github.com/apportable/SpriteBuilder into develop
Merge pull request #179 from jtwigg/develop

Develop
Correct CCButtons defaultSerialization
Update cocos2d version
Merge branch 'develop' of https://github.com/apportable/SpriteBuilder into develop
Merge pull request #184 from jtwigg/develop

Develop
Fix Skew keyframe animations.
SB ARC: fix LabelTTF node not showing the system font list
refactor: replaced appdelegate singleton properties (resource, plugin)

- prevent confusing them as properties/ivars of the appdelegate
- use the singletons the same way throughout app (some code went through appdelegate properties, most used sharedManager singleton accessor as one would expect it to be used)
- removed passing around resource manager to another class (one instance)
SB ARC: fix wrong and superfluous uses of weak/__weak
Fix PVR exporting bug.
Can’t select non-power of 2 images for PVRTC.
Merge branch 'develop' of https://github.com/apportable/SpriteBuilder into develop
Merge pull request #187 from jtwigg/develop

Develop
Merge branch 'develop' of https://github.com/KoboldKit/SpriteBuilder into develop

Conflicts:
	SpriteBuilder/ccBuilder/CCBWarnings.h
Merge branch 'develop' of https://github.com/apportable/SpriteBuilder into develop
Merge pull request #188 from jtwigg/develop

Develop
Updates bundle version to 1.0.2
pad document with 3 bites to correct Elias Gamma decoder from reading outside bounds.
Merge branch 'develop' of https://github.com/apportable/SpriteBuilder into develop
Merge pull request #189 from jtwigg/develop

Develop