Transfer technical documentation from README.md to official docs (single-source-of-truth simplification)

[tpmccallum]

Hi,
A couple of tasks which can be achieved now that the official Bartholomew documentation is live (public).

• Reduce the amount of pre-existing technical documentation in Bartholomew's README.md file.
• Transfer technical content like commands, instructions on how to install/use and so forth, to the official docs site [1].

This will provide a single-source-of-truth approach for us and reduce effort (only update documentation in 1 place, as the software evolves). Thanks @vdice for the feedback/comment @ #77 (comment)

I have assigned myself buy please anyone feel free to jump in with any ideas/comments/feedback i.e. thanks @karthik2804 for pointing out the binary release point the other day @ #93 (comment) that comment was useful and thought provoking.

[tpmccallum]

#110 closes this.