Merge pull request #4 from jlscott2005/deck_flipping

basic card-flipping function.  NOTE: it doesn't stop yet
added stat.erb and button on stat.erb. Finished decks page
Merge pull request #5 from jlscott2005/deck-page-and-stat-page

added stat.erb and button on stat.erb. Finished decks page
added href for decks to go to first card in deck.
Merge pull request #6 from jlscott2005/deck-page-and-stat-page

added href for decks to go to first card in deck.
implement answer testing \!
Deck goes to stats page when complete