bowling

Two naive implementations of bowling alley

1. Rounds & players are dynamic
2. Can change the bonus for each strike/spare
3. Checks bounds
4. Prints scores after the entire program
5. Modular enough to print scores after each round, change bonuses, add formats for scoreboards, change MAX_PIN_SCORE, etc.
6. Bowling.cpp contains simple point addition for spare/strike & bowling_bonus.cpp has an example to modify point reward system