Link reference docs in README

[jhamon]

Problem

The generated documentation is not linked from the README

Solution

README updates:

• Link generated reference docs from readme
• Replace relative links with absolute links, so that they work properly when clicked from within the rendered docs home
• Consolidate documentation stuff into one section
• Update and organize badges

See the results here

Type of Change

• Non-code change (docs, etc)

[austin-denoble]

Looks good, thanks. I was thinking we may also want to update the repos that have generated reference docs to include a link to the docs directly from the "About" header section, if that makes sense.