Added RAC support for UIImagePickerController.
Style fixes.
Updated project settings for header, added import to ReactiveCocoa.h.
Added test for functionality.
Removed dismiss code out of category, added note about dismiss responsibility to header.
Style and import fixes.
Added signal for picker cancellation.
Changed reduceEach to mapReplace, added blank line after cancelled signal, separated test for picker cancellation
Changed takeUntil: for imagePickerSignal.
Changed condition of second test to beNil().
Updated header doc removing statement about nil on cancellation.
Style fixes + tests change.
Merge branch 'master' of github.com:ReactiveCocoa/ReactiveCocoa
Merge pull request #1251 from TimurBK/master

Added RAC support for UIImagePickerController.