Implement a real init.d style script for Razor

At the moment there is a `daemons` gem based process for running the Razor server, but it isn't quite ready to be a normal sysv init script - or to integrate with systemd, upstart, or other vendor tools.

We should make sure we have that code in a solid state for working with the init system, then provide at least a classic sysv init script to run Razor.