Reverse the direction of the rat when it collides with an obstacle
Merge remote-tracking branch 'origin/Purest'

Conflicts:
	coffee/components.coffee
	coffee/scenes.coffee
Adds background image for tiling
Correctly load rat2.gif
Remove bad callback in Rat
Merge remote-tracking branch 'origin/hannah'
Add gnome animations
Adds gnome death
Adds second background option
Adds 2 new building assets and pigeon asset

Pigeon cell size is 40x40
Adds correct pigeon asset

Sorry about that--this one has the rightamount of colors on it.
Adds big background image
Add Building1 and Building2 with new sprites
Add pigeon sprite

It's not animated yet.
Add potato sprite
Animate potato
Center on and follow the player
Merge remote-tracking branch 'origin/sprites'
Use Crafty's frame counter

Player was counting frames itself. Now use Crafty's frame counter
instead.
Prettify levels.coffee