[docs] Update README to fit template and edit for clarity

Updates README structure to include template sections and TOC. Edits for clarity, flow, and additional information about exec params (for ease of use and to ensure information is available when access to the internet is not).
Yep. There are two reasons for this:
1.) The ideal structure of a module is for there to be a license file.
2.) We're trying to keep the README content to more instruction-based content. :)