New home design

# Before

![screen shot 2014-11-21 at 13 33 57](https://cloud.githubusercontent.com/assets/761794/5142493/496df85c-7183-11e4-806c-6ff0933304d7.png)

# After
![screen shot 2014-11-21 at 13 33 35](https://cloud.githubusercontent.com/assets/761794/5142495/49876292-7183-11e4-8a92-322fcea33ed6.png)


I changed the design to use _hero unit_ from [refills](http://refills.bourbon.io/) and I added the link to add a new pet