Clean slate
def initial spec and game.rb
Red: it should roll.
Green: it rolls"
Refactor: extract the game object
Red: roll a gutter game
Green: rolls a gutter game
Green: rolls all ones
Refactor: roll many. remove the create game test
Red: roll a spare
Refactor: score using an array of rolls
Refactor: score by frame
Green: it can roll a spare
Refactor: made first_in_frame explicit
Refactor: extract roll_a_spare
Red: roll a strike
Green: rolls a strike
Refactor: extract strike, spare tests. Bonus and normal scoring
Green and Finished. Completed in under 25 minutes.