sass instead of scss
basic responsive design, closes #4
improved handling of alsos, don't change dipe till new image has loaded
fix twitter score changing
favicon and apple-touch-icon
move keyframes to separate file
angel dipe with wings and clouds!
level up: poop happens every 10 changes
dipe-based audio switching!

prefers .ogg files but will use .mp3 if ogg is unsupported. created
.ogg files for all dipes (duplicates of original) but will replace as
they're created.