Merge pull request #2 from CocoaPods/master

Update from CocoaPods:master
Add new podspec for the latest version of THContactPicker
Add documentation to prepare_command with valuable input from @tonyarnold.
add newline
release AVOSCloud 1.4.4
Added RDVCalendarView
Added RDVKeyboardAvoiding
Added RDVTabBarController
Update the path case sensitivity

in case user uses the case sensitivity file system such as using in OS X Server
[Add] RFduino-library (1.0.0)
OBDragDrop release 1.0.0

• Now ARC-enabled. Please use the appropriate compiler flag for non-ARC projects.
• Various bug fixes
NBUCore 2.0.0
[Update] Weibo (2.4.0)
Added pod spec for RMHelpfulLabel
KeepLayout v1.2.2
[Add] GKImagePicker@arkuana (0.0.3)
[Add] UIDevice-Hardware@arkuana
[Fix] GKImagePicker@arkuana
[Update] ILMovieDB (0.0.2)
[Fix] GKImagePicker@arkuana