Merge pull request #252 from KoboldKit/develop

added missing .xcworkspace in sprite kit template project required by ProjCreator class
Added trackpad zoom gesture support, scale range 0.25->1.5, feels like a good natural range.

Issue #217
Fixes issue with low resolution screens
Merge branches 'develop' and 'develop' of github.com:apportable/SpriteBuilder into develop
Fixes plugin description
Removed redundant compilation of chipmunk sources (this is bad for iOS and does not work at all when trying to build for android).
fixed all easy to fix SB compiler warnings (all but undeclared selector and deprecated warnings)
suppress "undeclared selector" warnings for lib classes
fix "undeclared selector" warnings
suppress deprecation warnings for loadNibNamed: methods