Bowling Kata

http://www.butunclebob.com/ArticleS.UncleBob.TheBowlingGameKata

- game consists of 10 frames

- each frame has 2 opportunities to knock down 10 pins

- the score of the frame is total number of pins knocked down plus bonuses

- spare is when player knocks down 10 pins in 2 tries

- the bonus for spare is the number of pins knocked down on the next roll

- strike is when player knocks down 10 pins in first try

- the bonus for strike is the value of the next 2 rolls

- in the 10th frame if the player rolls a spare or a strike, he is allowed additional rolls to complete the frame up to 3 rolls