add tests and fix __rvm_version_compare, update #1691
Add user-supplied repo support to rvm-installer
Merge pull request #1697 from rys/user-supplied-repo

Add user-supplied repo support to rvm-installer
make sure man pages have proper rights so multiuser installation can be updated by rvm group users, fix #1538
Merge branch 'master' of github.com:wayneeseguin/rvm