Update README with latest instructions for dev environment
Update README with latest instructions for dev environment

Change-Id: I478ba9f6945d0ef54b7d500996df454b50695f89

stackforge/monasca-ui,stackforge/monasca-ui,stackforge/monasca-ui,openstack/monasca-ui,stackforge/monasca-ui,openstack/monasca-ui,openstack/monasca-ui,openstack/monasca-ui