Show team and repo badges on README
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/fc47e904c942eace9b274fbc46f5d27d

Change-Id: I61fd31c923c100cf4c81ef2b287621193a0c6c29

openstack/keystone,ilay09/keystone,ilay09/keystone,mahak/keystone,openstack/keystone,rajalokan/keystone,openstack/keystone,mahak/keystone,ilay09/keystone,mahak/keystone,rajalokan/keystone,rajalokan/keystone