updates Card model and adds migrations for decks_cards table
updates card model
updates card_set model
changes card_type model to mtg_type to reflect migration
updates color and deck model
changes mtg_color model to card_color
adds database.yml to gitignore
adds attr_accessible to user model
updates specs to reflect current state of models and associations
Merge pull request #2 from PhilVargas/models

Models