Moved to UIView+BooleanAnimations pod.
Merge pull request #337 from artsy/externalization

@orta => Moved to UIView+BooleanAnimations pod.
Fixes #339.
Fixes #323.
Merge pull request #340 from artsy/readme

@orta => OSS Fixes
Updated cocoapods-keys.
Added minimumKeyLength.
Reverted Makefile's  command to use dashes instead of empty strings for stubbed keys.
Updated CocoaPods core.
Added note about problem with .
Updated to version of Artsy+OSSUIFonts that specifies module name of , which will be helpful later.
Merge pull request #342 from artsy/make-oss

@orta => Address problem installing from OSS