Add docs to docs directory

[c9rgreen]

Let's create a Jekyll website in a ./docs directory and add documentation to it.

https://help.github.com/articles/user-organization-and-project-pages/#project-pages

[liquid06]

We discussed including the documentation that is currently on code.library.arizona.edu in the docs directory.

The content would include:

• About Guide on the Side
• Creator guide
• Style guide

To be resolved:

• The contact form (used for requesting demo accounts, general quesitons, technical questions)
• Redirect code.library.arizona.edu to an appropriate page (it is referenced in published articles)