Create README.md
Increased number of cards to 16.
Merge branch 'assignment/one' of github.com:zanshin/Matchismo into assignment/one

* 'assignment/one' of github.com:zanshin/Matchismo:
  Create README.md
Completed flip result status line.

Game now displays results of play, indicating match, mismatch, or flip
result, along with score gained or penalty lost.
Added "Deal" button which starts a new game.

Per assignment it doesn't ask, it just reset the board, score, etc,.
and starts a new game.
Partial implementation of 2 or 3 card mode.

Added UISegmentedControl to select game mode
Modified [PlayingCard match] to work for 2 or 3 card matching
Modified CardMatchingGame for 2 or 3 card matching

** Game play isn't working for 3 card mode. Still matching just 2 cards.
completed diabling/enabling of gameSelector UI per task #6
added image to card backs to complete task #7
2 or 3 card matching now works. need to initialize numberOfCardsToMatch properly
overide on numberOfCardsToMatch setter to ensure it is 2 to start
Completed task 5: 2 or 3 card playing mode.

Cleaned up flipCardAtIndex in game to work properly with 2 or 3 card matching.
Merge pull request #1 from zanshin/assignment/one

Assignment I: Matchismo completed.