removed warnings for duplicate image files
Added TabcController for future expansion.  Redesigned CardGame UI.
Added SetCard API and cleaned up some formatting.
Added SetCardDeck API.
Implemented matching logic within SetCard API
Split up implementation of CardMatchingGame for easier readability.  Performance is a bit weaker and the print out is not in the same order as clicked...
Ensured readout to user was displayed in the order clicked.  Added orderClicked property to Card.
Simplified handling of flipCount before generalizing.
Removed UI from model and created new class - CardMatchinGameMove to store and pass along records of moves.  CardMatchingGame also keeps track of the game history now as well.
Subclassed CardGameViewController into PlayingCardGameViewController and SetCardGameViewController.  Updated UI in the storyboard.
Sort cards before storing the move so that they always read out in the order clicked.
Implemented AttributedString handling in CardGameViewController.  Fixed broken historySlider since the storage moved to CardMatchingGame.
Generalized button updates into CardGameViewController's subclasses.  Storyboard now displays attributed text.
Made attributedStrings have paragraphs with center formatting.  Cleaned up old code and deleted commented out old cold.
Implemented extra credit two.  Game results are stored in and retrieved from NSUserDefaults.
Implemented extra credit #3.  Added settings tab with button to clear scores.
Added custom icons to TabBar.
Moved clearScore function back to gameResults class.
added snapshot when merging to master
replaced card models with those updated in SuperCard.  updated SetCardGameController to handle less specific SetCard class.