Update README.md

Added more detailed description of the framework

Added README. Added missing import UIKit in FetchedResultCollection. Made ObservableCoreDataCollection public

Some prepublication clean-up

Fixed platform version dependencies

Added some ingores

Added test specific dependencies. Added a lot of test. Not full coverage yet

1. Added ObservableCoreDataCollection type.

First completed version

Changed Operation to be Core Data independent

Cleaned up commented code

Modified naming to fit convention. Added custom Update operation. Updated FetchResultsControllerChangesSubject to handled changes in FetchedCollection (with strong reference) instead of FetchResultController

Added Source code

Rebase for initial public commit

Initial commit