Home icon

Shows a home icon if the browser supports SVG

![screen shot 2014-07-30 at 17 28 56](https://cloud.githubusercontent.com/assets/85783/3752323/b208b4be-1806-11e4-9446-0084317ccb17.PNG)

![ ](http://media.giphy.com/media/rdma0nDFZMR32/giphy.gif)
As these are both true, is there any need for `RenderClasses`? Why not just 

```html
<li class="top-navigation__item top-navigation__item--home">
```
?