add debian demo install script
add debian demo install script

damienblom/a2billing,wcardona/a2billing,fureszpeter/a2billing,renatofb/a2billing,fureszpeter/a2billing,renatofb/a2billing,fureszpeter/a2billing,wcardona/a2billing,damienblom/a2billing,wcardona/a2billing,renatofb/a2billing,damienblom/a2billing,renatofb/a2billing,wcardona/a2billing,renatofb/a2billing,fureszpeter/a2billing,damienblom/a2billing,fureszpeter/a2billing,damienblom/a2billing,wcardona/a2billing