Fixes unknown format error

Maybe I'm missing something but I think the extension was wrong. It's also an empty file. @bketelsen 

![screen shot 2014-11-10 at 6 14 48 pm](https://cloud.githubusercontent.com/assets/6686356/4981024/9087c118-6905-11e4-8fac-99e3ac5f5a1c.png)