Updated openstack/openstack
Project: openstack/neutron  5e12c0d92758cf31e796f30badfe473ae893fbbe

Updated the README.rst

Updated the Readme.rst with some formatting issues. Also
stole the ending line from the Nova to point in the direction
of the CONTRIBUTING.rst.

Change-Id: I595b7feb641aee91d47ba55eedab29e7511bfa35