Initial commit of nothing.
Committed failing initialize test.
Added passing intialize method to BowlingGame.
Added test for a game with all gutter balls & methods for BowlingGame.roll and BowlingGame.score that pass our test.
Add a test for rolling 1 each turn and implemented .reduce instead of .inject for our score method.
Used 'let' function in our test to keep DRY.
Added a test to check the score method in the case of spare. Edited our score  method to pass for spares.
Added a test to check strike scoring. Then, adjusted the score method to account for strikes.