Single quick fix in one of the example files


The navbar class starts a pixel early at 980px, before the other
bootstrap and responsive css files do at 979px

Here is a shot of the bug that was fixed:
![Screen Shot 2013-02-21 at 12 53 43 PM](https://f.cloud.github.com/assets/1238994/181733/0aab6716-7c58-11e2-8dc7-86a6a4af73c8.png)