Game Complete

Refactoring possibilites
  Seperate Cards class
  Case statement for adding values to cards in Deck class
  Refactor total method in module Hand to not use logic pertaining to
Blackjack
  Put methods from  module Hand into class Blackjack which pertain to
the game of Blackjack
    over_21?
    total_with_aces?
    fix_ace_over_21