Update congress README file
Update congress README file

Change-Id: Ie264ff6799f84a21b199ea32a2ba9ae1ec851285

ekcs/congress,ekcs/congress,openstack/congress,ramineni/my_congress,ekcs/congress,ramineni/my_congress,ramineni/my_congress,ramineni/my_congress,ekcs/congress,openstack/congress