"else" added

I think one "if" is enough to play it. Without "else", it sets "audio" and "prefix" variables twice
make the example continue on forever
Merge branch 'patch-1' of git://github.com/lacivert/fartscroll.js into lacivert-patch-1
Moving the else to the same line as the bracket
Merge branch 'neverending-story' of git://github.com/imnotjames/fartscroll.js into imnotjames-neverending-story
OK, I got a little bit carried away with this commit. Basically, I
removed the necessity of specifying what element we want to scroll on,
and instead am just listening to the window's onscroll method.

ADDITIONALLY, I added the ability to play multiple fart sounds at a
time, as mentioned in #17 and #22. Otherwise, the farts sounded a bit
choppy.
Prevent multiple audio players, as pointed out in #29
Note the jQuery removal
One day, I'll figure out markdown
Moving global audio variables. Closes #28.
Merge branch 'master' of https://github.com/theonion/fartscroll.js

Conflicts:
	fartscroll.js
merge changes
farts now depend on scroll speed
incremental distance used