Git ignore xccheckout

See https://github.com/couchbaselabs/ToDoLite-iOS/pull/1
XCode 5 compatibility shims

Source: https://github.com/ricobeck/KFCocoaPodsPlugin/blob/master/KFCocoaPodsPlugin/KFCocoaPodsPlugin-Info.plist
Merge pull request #2 from mx4492/master

Xcode 5 Compatibility