frame keeps track of the score for each shot
Frame knows if it is a spare
Frame knows if it is a strike
Made frame score an instance variable
Scorecard updates a frames score if it was a spare
Frame score is updated if there is a strike
Refactor Frame.js
Refactor scoreboard and add strike bonus functions
Scoreboard creates all 10 frames at once to prevent bug with strikes
Changed spec file to accomodate 10 frame instantiation