Fixes to README.rst for standalone congress setup
Fixes to README.rst for standalone congress setup

Change-Id: I20db368bf1e4cfd4d3904ac532ed13d259432a1f

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