
Use semantic line breaks and name the file after the issue number or the PR #. trivial.rst (this will appear in the release changelog).

I was getting frustrated with rst files and found I was having better luck making the new sections markdown. I plan to iterate on this more over time - splitting apart advanced as well. This is not the end-all be-all fix to the docs, no this is just progress.

I also added some context on the pipenv update and pipenv upgrade commands rework. There were some bits left in advanced that I wasn't sure where to put them, so I left that section but renamed it to be other since most of the advanced information moved to other sections.

The docs are long in need of work - this is revision1 which tackles cleaning up the contents from the Basics and Advanced sections and splitting them apart. Thank you for contributing to Pipenv! The issue
