Change spec titles for cookbooks directory.

This makes the title the same as the expectations.
Create the Tools Directory.

This adds the needed controller action, route and view for the Tools Directory.
The content is not yet complete.
Display Tool owner gravatar in simple_tool partial
Add content to Tools directory.

Explain what tools are, give an example of tools, display a link for adding a
tool and list out the tool types.
Store location for new in the ToolsController

If a user goes to add a new tool and is not authenticated, redirect them back
after they sign in.
Add an "Add Tool" button to the Tools directory
Make the Tools Directory responsive.
Adjust links to Tools index.
Merge pull request #764 from opscode/tools_landing

Implement the Tools Directory