Created user class and spec file with passing tests
test for match spec added
adds basic database class
Merge branch 'felguerez'
Match class added and all tests pass"
Merge branch 'ronak'
fixes database spec
Wraps the User class in Module RPS. Adds attr_reader for database hashes
adds game logic
finishes game logic to include match win incrementor
Refactors the game play method; now contained inside of the database versus the Game class. RPS.db.play takes three parameters: match_id, move and player_id
adds usecase file
Adds the CreateInvitation use case, tests for existence, host and guest ID arguments. Also adds status='pending' for a new invite
Adds the accept_invite method to the database. Also tests for success when all three arguments are valid and error when any given argument is invalid or nonexistent