The SIG doesn't use Launchpad for blueprints, so don't claim it does.
Also clarify that adherence to the structure is a recommendation not
a strict requirement.
Change-Id: Ic0cc8965620087eee9c34a76796c2f3267b1b72f
Set up an initial structure for the repository which provides sections
for both specs and use cases, plus a guide on how to contribute.
Story: 2001628
Task: 6614
Task: 6615
Change-Id: If117f8b4d634707a9375a78292f916f47a4f8b0c