add delete old game data script
Merge pull request #71 from jamesyothers/master

(deleteOldGameData.js): add delete old game data script
handle parameters for deteleOldGameData
Merge pull request #72 from jamesyothers/master

handle parameters for deteleOldGameData
feature(Hero.js): Add more stats to hero object
feature(save-user-stats): Begin adding logic to save user stats at game end
feature(Game): Implement tracker for when heroes "rob graves"
feature(Game, Hero, create-save, save-user-stats): Save user stats at end of game
feature(save-user-stats.js): Add most recent stats to user updating.
refactor(create-games, save-stats): Remove unnecessary log statements
Merge pull request #73 from gjtrowbridge/update-stats

feature(run-all-games, more): Save user stats at the end of each game.