ReactiveCocoa/ReactiveCocoaLayout — pull request #78 by jspahrsummers (2013-06-30 07:42:01+00:00)
Title: Update to use RACObserve()

`RACObserve`, new in [RAC 2.0](https://github.com/ReactiveCocoa/ReactiveCocoa/pull/618) replaces `RACAble` and `RACAbleWithStart`.