We don't have an org-level README

[Fayti1703]

Problem

GitHub allows you to create an org-level README, which is an information/action opportunity that we're currently not taking advantage of. It also makes our org-level page look a bit empty?

Context

Possible inspiration: https://github.com/microsoft/

[seanmakesgames]

Agree this is a good opportunity.