utils.js:removeClass:24, the 're' variable scope issue

Hey!

[https://github.com/richardvenneman/floatl/blob/master/src/js/utils.js#L24](https://github.com/richardvenneman/floatl/blob/master/src/js/utils.js#L24)

We have an ASP.NET application where this variable is assigned to global scope and prevents minification.
I can submit pull-request if you want.
