Gear logo should only spin the gear (not the text)

The spinning gear logo is really cool but it's kind of awkward that it spins the text part of the logo too. I fixed this by making the text a separate layer that sits on top.

You’ll probably want to add the `lahacks-circle.png` to your S3 bucket and update the URL in `blue/index.html` to keep your conventions.

![looping](https://cloud.githubusercontent.com/assets/870796/2605477/bd1cc706-bb44-11e3-88e7-adba6d39db7d.gif)