Split README to separate sections under doc/ (!6513) · Merge requests · GitLab.com / www-gitlab-com · GitLab

Achilleas Pipinellis - OOO until November 25th (parental leave) requested to merge split-readme into master Jun 21, 2017

The README was starting to get hard to parse with all the information.

This MR tries to split things up in sections under doc/.