Made some fixes.
Instead of clearing unfinished games, show games as complete and incomplete
in the My Stats page.

Fixed bug where last card wasn't showing up during gameplay.

Moved round creation into /deck route and only creating with user_id.
Deck_id field updated in the round.rb model file. THIS NEEDS TO BE FIXED!

Checking if the number of guess per round equals the number of cards in
the chosen deck to finish game.

Added a bunch of puts statements to help debug and refactor.
Merge pull request #13 from ameliapadua/clear_unfinished_game_data

Clear unfinished game data