Added a LevelSelectState which takes care of interaction when the player decides to Load Game, as opposed to hitting new game.  You can now jump to a specific level.
Merge branch 'master' of https://github.com/recardona/game-off-2013
Fixed bug - a LevelStage is NOT a Narrative one. :)
Refactored the sound effects that related to state information out of the stages, and gave them to the enclosing PlayState.
Expanded the JSON representation for levels - both levels now contain similar information regarding the music that should be played at different points in their respective execution.
Added the sound_map to the PlayState, which maps strings to howler.js Howl objects.  These objects are passed to the stages upon initialization.
Added music management to the NarrativeStage, and expanded the LevelStage's initialization to include the music assets.
Changed the metonymy theme to exactly 30 seconds long, which loops perfectly and makes it easier to write general code for handling music playing.