FEATURE : Add API to retrieve balance
FEATURE : Add API to retrieve balance

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