Updated openstack/openstack
Project: openstack/oslo.middleware  f9d0b94c408aa6f127101c6c66aa132bcd0cb6fa

Flesh out the README

Add details to the README on what can be done with the library

Closes-Bug: #1391551
Change-Id: I251609f1e5b33fe5eadf3bd85c7166305ec3bcb3