Enhance docs directory with documentation from website

[JEBailey]

By adding the additional documentation that's found on the website.

Current documentation on the site can be out of date or inaccurate. The site is not user friendly and has no issue tracking support. By moving documentation into the source code it provides the same level of version support and the ability for users to submit pull requests for documentation updates.

Submitting as an enhancement and working on the solution.