new try on bowling game kata

this round focusses on unclebob's transformation priority premise

http://blog.8thlight.com/uncle-bob/2013/05/27/TheTransformationPriorityPremise.html
pass gutter game
handle game without spares and strikes
handle spares
verify a spare in the last frame is handled properly
refactor
better name
handle strikes
refactor
verify strike in last frame is handled correctly
refactor
add integration tests