RadLikeWhoa/Countable — pull request #14 by craniumslows (2013-05-02 17:04:12+00:00)
Title: Fix for a bug if omit tag is missing like in the demo page the library breaks. 

I didn't check if the omit attribute was there before asking for it's
value. I added it on last minute and should have tested more
thoroughly. Sorry. http://jsfiddle.net/j6nkw/5/

I used a ternary (element.attribute.name) ? attr.value : false,
if that's cool then it should fix it