Github like styling

![image](https://f.cloud.github.com/assets/1314119/970029/f9db559e-05ce-11e3-9ef3-1eba24eee140.png)

That is what it will look like **with** https://github.com/hybridgroup/kidsruby/pull/107 merged too! Without it keyboard shortcuts will look bad. 

This is without that PR. Besides that page everything else looks great.

![image](https://f.cloud.github.com/assets/1314119/970049/53a23796-05cf-11e3-8405-194b1cad106b.png)