Using --daemon {start|stop|restart} OctoPrint can now be daemonized/controlled in daemon mode. Via --pidfile it's possible to set the pidfile to use, --configfile allows specification of the config.yaml to use, --basedir specifies the location of the basedir from which to base off the upload, timelapse and log folders. I also updated the README to include some config file settings which were previously undocumented.
The location of the config folder has changed. OctoPrint will try to migrate the configuration from its old location (~/.printerwebui, ...) to its new one (~/.octoprint, ...). For this to work the following conditions must be met: 1) the old config folder exists and is a directory 2) the new config folder does not exist at all. The migration functionality will be in the future.