support for RedHat osfamily using EPEL repo
small spec refactor and support for RedHat osfamily

adding support for RedHat osfamily and moving fixtures symlinking to .fixtures.yml file
change require to regex, fixes travis tests on older puppet
don't overwrite the real $require metaparam
Merge pull request #3 from andyshinn/rhel_support

Support for RHEL / CentOS using the EPEL repository