Convert to XCTests
Xcode forgot to update .pbxproj
Merge branch 'master' of https://github.com/iMartinKiss/Block-KVO

# By Martin Kiss (2) and niklasberglund (1)
* 'master' of https://github.com/iMartinKiss/Block-KVO:
  Remove Frameworks group
  Clean up OS X target files
  added framework build target for OS X

Conflicts:
	Block Key-Value Observing.xcodeproj/project.pbxproj