add callback to example script
add callback to example script

pooler/electrum-ltc,dabura667/electrum,asfin/electrum,FairCoinTeam/electrum-fair,romanz/electrum,cryptapus/electrum,aasiutin/electrum,vialectrum/vialectrum,aasiutin/electrum,kyuupichan/electrum,cryptapus/electrum-uno,procrasti/electrum,pknight007/electrum-vtc,protonn/Electrum-Cash,vertcoin/electrum-vtc,cryptapus/electrum-uno,neocogent/electrum,cryptapus/electrum-myr,imrehg/electrum,pooler/electrum-ltc,FairCoinTeam/electrum-fair,fireduck64/electrum,wakiyamap/electrum-mona,imrehg/electrum,pknight007/electrum-vtc,imrehg/electrum,digitalbitbox/electrum,fujicoin/electrum-fjc,spesmilo/electrum,digitalbitbox/electrum,procrasti/electrum,asfin/electrum,protonn/Electrum-Cash,dabura667/electrum,argentumproject/electrum-arg,spesmilo/electrum,dabura667/electrum,cryptapus/electrum-myr,argentumproject/electrum-arg,fujicoin/electrum-fjc,pooler/electrum-ltc,vertcoin/electrum-vtc,fireduck64/electrum,fireduck64/electrum,wakiyamap/electrum-mona,cryptapus/electrum,argentumproject/electrum-arg,protonn/Electrum-Cash,molecular/electrum,dashpay/electrum-dash,molecular/electrum,aasiutin/electrum,FairCoinTeam/electrum-fair,pooler/electrum-ltc,digitalbitbox/electrum,romanz/electrum,aasiutin/electrum,procrasti/electrum,protonn/Electrum-Cash,asfin/electrum,cryptapus/electrum,wakiyamap/electrum-mona,vertcoin/electrum-vtc,romanz/electrum,neocogent/electrum,vialectrum/vialectrum,dabura667/electrum,cryptapus/electrum-myr,vialectrum/vialectrum,dashpay/electrum-dash,cryptapus/electrum-uno,fireduck64/electrum,argentumproject/electrum-arg,fyookball/electrum,lbryio/lbryum,dashpay/electrum-dash,fyookball/electrum,pknight007/electrum-vtc,kyuupichan/electrum,molecular/electrum,fujicoin/electrum-fjc,imrehg/electrum,lbryio/lbryum,spesmilo/electrum,spesmilo/electrum,molecular/electrum,kyuupichan/electrum,wakiyamap/electrum-mona,procrasti/electrum,dashpay/electrum-dash,FairCoinTeam/electrum-fair,fyookball/electrum,cryptapus/electrum-myr,cryptapus/electrum-uno,digitalbitbox/electrum,vertcoin/electrum-vtc,pknight007/electrum-vtc,neocogent/electrum