Books commercial component

Styling the books component to look and feel like part of the related content below and article.

Before:
![books-old](https://f.cloud.github.com/assets/1148714/2376998/640c4af8-a87d-11e3-854e-ba8a96eb596e.png)
![books-old-desktop](https://f.cloud.github.com/assets/1148714/2376999/640cfb9c-a87d-11e3-9589-2dd752114462.png)

After:
![books-mobile](https://f.cloud.github.com/assets/1148714/2377005/6dd6180c-a87d-11e3-80e9-203b5846d0c6.png)
![books-desktop](https://f.cloud.github.com/assets/1148714/2377004/6dd488a2-a87d-11e3-9489-8c2fe5d4b033.png)