feature(GameView.js): Start at turn 0 so users can see the beginning of the game
feature(GameView.js): Add play functionality to GameView.js
Resolve merge conflicts with scss
refactor(slider.js, GameView.js): Start moving slider into backbone
feature(GameView.js): Fully implement slider in backbone,
  Make slider work with play button,
  Clean up slider code,
  Make slider scrolling work for any size,
  Set slider width to be dynamic rather than constant
fix(GameView.js): Fix issue with restart not sending slider to turn 0
Merge pull request #85 from gjtrowbridge/merge-play-button-changes-with-current

feature(GameView.js, styles): Fully implement slider