Update README.md
Update README.md
initial grizzly
add EPEL EL6 repository for Grizzly
Merge branch 'grizzly' of https://github.com/rackerjoe/rcbops-osops-utils into grizzly
Merge pull request #79 from galstrom21/grizzly

Pulling in rackerjoe's grizzly work
add do_upgrades flag