Display other cookbook install options

:fork_and_knife: Display install options for Berkshelf, Librarian, Knife Install and Knife Download.

![screen shot 2014-08-05 at 3 47 18 pm](https://cloud.githubusercontent.com/assets/316507/3817625/8938567a-1cd9-11e4-878a-abe34c08304e.png)