Refactor: rename numberOfInvalidatedValues

Signed-off-by: Miguel M. Almeida <miguelcma@CMA-Retina.local>
Remove missing NSLog

Signed-off-by: Miguel M. Almeida <miguelcma@CMA-Retina.local>
Change README.md

CocoaPod now uses CocoaPods repository

Signed-off-by: Miguel M. Almeida <miguelcma@CMA-Retina.local>