Fix rotateOutUpLeft

Caught this in my diff file after working on an additional animation I
want to contribute (coming soon!). Grunt builded and this section
changed, to my surprise. After further testing, I found out
*rotateOutUpLeft* was broken, even on the animate.css site. Checking in
here as a potential fix.

Bug and fix tested on Chrome and Safari on OS X.
Merge pull request #125 from jeffxmn/master

Fix rotateOutUpLeft