From release 17 onwards, wsgw includes the following files:
* contrib/README.init
* contrib/pianod.conf
* contrib/pianod.raspbian.init

The script expects wsgw to be installed at /usr/sbin/wsgw, but this can be changed in wsgw.conf.

Text of README.init copied below


== init.d service scripts for WSGW ==
The files wsgw.raspbian.init and wsgw.conf provide for running wsgw as a 
service on Linux using the older init.d script system.  This includes many 
Linux distributions, but they are not all cross-compatible.  The init script 
provided was tested on Raspbian, the Debian-based distribution for RaspberryPi.
It will probably work on other Debians.  Essentially it depends on 
/lib/lsb/init-functions defining shell functions like log_daemon_msg.

Additionally, the script depends on the helper program start-stop-daemon.

If you are trying to set up wsgw as a service on a systemd system (e.g. 
ArchLinuxARM), see README.service.


== Installation ==
To add the service to your systemd Linux system, copy wsgw.raspbian.init to 
  /etc/init.d/wsgw

wsgw.init expects to have some environment variables set for it so copy
wsgw.conf to
  /etc/wsgw.conf

You can edit wsgw.conf to change the runtime options, add services, etc.  By
default, wsgw.conf just runs a service for pianod.

You should then be able to control the wsgw service using:
  /etc/init.d/wsgw start
  /etc/init.d/wsgw status
  /etc/init.d/wsgw stop

To set up the service to run at boot:
  update-rc.d wsgw defaults

To disable:
  update-rc.d wsgw disable


== Support ==
These files are provided as is.  If you need support, you can try asking on the 
pianod mailing list:
  http://lists.deviousfish.com/listinfo.cgi/pianod-deviousfish.com

For RaspberryPi support, you could also try the RaspberryPi forums:
  http://www.raspberrypi.org/phpBB3/