adds card model
changes card color to an array
finishes base DB tables
adds card set and format models
adds unique constraint to types
updates README
adds types models and db:seed data
adds AR relationships and some migrations
changes card and subtype relationship; starts work on an card set import csv
changes card set import csv syntax
begins building card set import procedure
more work on card set importer
working on ability modeling
adds more to 2015 core set csv
more cards added
adds effects model
adds duration to effects
adds more cards to 2015 core set
changes ability effect to array
adds parent type to subtypes; first planeswalker!