Implement the search API end-point.

:construction_worker:  Creates GET /api/v1/search&q=COOKBOOK_QUERY. Currently returns the cookbooks
with a similar name.

Paired with @tristanoneil and @raskchanky through this.

LeanKit Card: Super-20
https://chef.leankit.com/Boards/View/87539991/90240856

![screen shot 2014-03-03 at 5 25 48 pm](https://f.cloud.github.com/assets/928367/2315473/116f5410-a324-11e3-97c2-f34efa006093.png)
![screen shot 2014-03-03 at 5 26 02 pm](https://f.cloud.github.com/assets/928367/2315474/11770124-a324-11e3-84c6-f164c0aacfe0.png)
![image](https://f.cloud.github.com/assets/928367/2283128/1976b518-9fb9-11e3-80b4-152ce911ab53.png)

This has been tested with curl and dullknife. It currently searches Cookbook names, descriptions, maintainers and categories.