Style tweak
Update README.md
Restore execution of Unit Tests via Rake
Update TESTING.md for 0.20.x and modern reality
Move Testing doc to more discoverable place
Add an exception if you try to create managed object contexts without adding a persistent store
Add error handling and use of `RKEnsureDirectoryExistsAtPath` so that Core Data examples work well for OS X as well as iOS
Fix a few issues identified via static analysis
Fixed documentation omission

The managed object store provides two managed object contexts, not two managed objects.
Fixed problems with initial implementation of temporary managed objects visitor. The implementation was under tested and only worked with a single relationship. refs #1001
Add mapping test for multi-part form upload. refs #1148
Fix bug in mapper delegate configuration and add missing test coverage for response mapper operation and both object request operation classes. closes #1156
Reimplement predicate caching within the RKFetchRequestManagedObjectCache to avoid nasty crash due to malformed predicates. fixes #1141
Bump to Cocoapods 0.16.1