Nathan Dunne authored Apr 12, 2021 and Diego Sueiro committed May 20, 2021

Created Repo README.md, as well as quickstart guide using Sphinx.

Issue-Id: SCM-2355
Signed-off-by: Nathan Dunne <Nathan.Dunne@arm.com>
Signed-off-by: Diego Sueiro <diego.sueiro@arm.com>
Change-Id: I438718b9fe950c65f13f5aba3bd456a5ed78665b