Fix the broken Glyphicons

Hey Ilya -

I just went through the nomster guide, and updated the instructions on how to install the twitter bootstrap gem, from the documentation of the twitter bootstrap gem.  After going through that, I adjusted your code to be what would happen if you followed the instructions [here](https://github.com/twbs/bootstrap-sass#a-ruby-on-rails) rather than the outdated nomster ones.

Then I refreshed the page and it worked like a charm.  So it looks like that's the problem.

Thanks for pointing out that problem and helping us make the nomster guide better for all our students!!! You rock!

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As a side note, this is a GitHub pull request. This is how I can show you code that I think you should change in your project. It allows you to look at the code, you'll see the green code is code that's added and the red is code that's deleted. The "Files changed" tab will show you the code.

"Commits" will show you a listing of the individual comments I'm trying to send you. And this tab, the conversation tab you can use to communicate about the change.

If you want to suck in all this code into your project you can by pressing the green merge button. After you press the merge button, you'll have to update your web dev environment to have the latest updates from GitHub and to do that you can run this command:

```
git pull origin master
```

Hope this helps.

Also I see you're cruising through the Zed Shaw: Learn Ruby the Hard Way.  Awesome!

Have an awesome weekend, Ilya!


Cheers,
Ken