add project README

Now that we're using GitLab, let's take advantage of the "landing page"
README feature with some minimal information, mostly to point people to
the right resources.

Acked-by: Dylan Baker <dylan@pnwbakers.com>
Acked-by: Jason Ekstrand <jason@jlekstrand.net>
Signed-off-by: Eric Engestrom <eric.engestrom@intel.com>
1 file changed