better gemspec
added 'after' support to back/forward fiend
fixes 'after'
adds UIBezierPath support to the :path option on CAAnimation.keyframe_animation
rm unused code
remove dependency on 'localized' from 'factories'
Merge branch 'master' into osx

Conflicts:
	Gemfile.lock
	lib/version.rb
added 'constants' to OS X