Show team and repo badges on README

This patch adds the team's and repository's badges to the README file.
The motivation behind this is to communicate the project status and
features at first glance.

For more information about this effort, please read this email thread:

http://lists.openstack.org/pipermail/openstack-dev/2016-October/105562.html

To see an example of how this would look like check:

https://gist.github.com/421dedda55d2aaa17516a9cb359fa804

Change-Id: Id037361229dc5fb205bca679a891d77436fea4c2

Author: flaper87

README.md

@@ -1,3 +1,10 @@
+Team and repository tags
+========================
+
+[![Team and repository tags](http://governance.openstack.org/badges/puppet-openstacklib.svg)](http://governance.openstack.org/reference/tags/index.html)
+
+<!-- Change things from this point on -->
+
 openstacklib
 ============