Add more documentation to the README

Signed-off-by: Fabian Deutsch <fabiand@fedoraproject.org>
Add imgbase wrapper for /bin

Signed-off-by: Fabian Deutsch <fabiand@fedoraproject.org>
imgbase: Fix base image installation

Signed-off-by: Fabian Deutsch <fabiand@fedoraproject.org>
Rename original imgbase POC

Signed-off-by: Fabian Deutsch <fabiand@fedoraproject.org>