Backport "minor updates to README"
Backport "minor updates to README"

heat-coe-templates: I0cd9f1f435b8befb6d91d1676b7b0cf8f62a4f2e

Change-Id: I49652dd9fca471d3f48f8c6145a2642dea4f3d77

Tennyson53/SUR,LaynePeng/magnum,eshijia/SUR,Tennyson53/magnum,jay-lau/magnum,ramielrowe/magnum,eshijia/magnum,openstack/magnum,sajuptpm/magnum,Tennyson53/SUR,mjbrewer/testindex,LaynePeng/magnum,dimtruck/magnum,ramielrowe/magnum,eshijia/SUR,ArchiFleKs/magnum,ffantast/magnum,ArchiFleKs/magnum,mjbrewer/testindex,annegentle/magnum,hongbin/magnum,hongbin/magnum,ddepaoli3/magnum,ChengTiesheng/magnum,ddepaoli3/magnum,paulczar/magnum,eshijia/magnum,openstack/magnum,Tennyson53/magnum,ChengTiesheng/magnum,Alzon/SUR,Alzon/SUR,mjbrewer/testindex,ffantast/magnum,annegentle/magnum,paulczar/magnum,sajuptpm/magnum,dimtruck/magnum