Mechanism for installing via RPM

[willfurnass]

QwikContext

I think many sysadmins would prefer to install via RPM(s) in RHEL-like environments.

Details

To support the building of RPMs a RPM spec file is required. I think dependencies can also be pulled from EPEL rather than PyPI.

Impact

See #18 and #19 for users that might benefit from this.

[anupamaloke]

thanks @willfurnass. This is great.