[Update] ReactiveCocoa 2.2.2

This fix also includes the removal of d files, as described here.

https://github.com/CocoaPods/Specs/commit/88876792aa8705e02cc49315b7e6a9c58b247ea3
Add d files back
Merge pull request #7199 from themackworth/reactive_cocoa_2_2_2

[Update] ReactiveCocoa 2.2.2