Updated the documentation for RKMappingOperation to make clearer.
Merge pull request #1400 from justynspooner/mapping-operation-documentation

Updated the documentation for RKMappingOperation to make clearer.
Drop dead application tests
Avoid expense of building aggregate object set for orphaned object deletion if there are no fetch request blocks registered
Call superclass implementation of `isReady` to fix issues with dependencies. refs #1399
Fix bug in class comparison when unregistering MIME type registrations. fixes #1406
Add basic test coverage object request operation dependencies. refs #1399
Invoke `RKEnsureDirectoryExistsAtPath` in Core Data example. refs #1407
Add example documentation for accessing the underlying error objects. fixes #1326
Drop shared Schemes for RestKit and RestKitFramework. Update Travis build script to copy Schemes into place during CI build
Disable logging if there is an `HTTPBodyStream` on the request. refs AFNetworking/AFNetworking#948
Bump to CocoaPods 0.20.2
Rework `rake test` and Travis builds
Try building under CI with shared schemes in the workspace instead of project
Try to restore Travis CI by explicitly invoking build, build-tests, and test in Xctool
Use ObjC runtime definitions instead of characters
Refresh Podfile.lock for 0.20.2
Fix bug with delivery of `isExecuting` KVO notification when an object request operation starts
If there is no `managedObjectCache` configured then you cannot skip mapping
Bump AFNetworking dependency to 1.3.0