Implement other game type engines

Duckpin and Candlepin could share the shame engine. The only major scoring differences between these and regular 10-pin is three throws rather than two, spares only occur if all pins are knocked down in 2 balls (if its in 3, you just get 10 points) and Candlepin would not need to call resets until the end of the frame. Strike bonuses also only effect the first two balls.

5-pin is slightly different altogether with scoring and may need a different implementation in order to parse specific combinations that require specific markings on the score sheet. Just read http://en.wikipedia.org/wiki/5-pin_bowling for the jist of it.