ncd: add volumekeys example
ncd: add volumekeys example



LazyZhu/badvpn,linfengfeiye/badvpn,binondord/badvpn,binondord/badvpn,chrisballinger/badvpn,LazyZhu/badvpn,linfengfeiye/badvpn,PowerOlive/badvpn,Git-Host/badvpn,linfengfeiye/badvpn,chrisballinger/badvpn,tempbottle/badvpn,Git-Host/badvpn,tempbottle/badvpn,tempbottle/badvpn,PowerOlive/badvpn,binondord/badvpn,tempbottle/badvpn,LazyZhu/badvpn,LazyZhu/badvpn,PowerOlive/badvpn,chrisballinger/badvpn,binondord/badvpn,linfengfeiye/badvpn,tempbottle/badvpn,chrisballinger/badvpn,PowerOlive/badvpn,Git-Host/badvpn,LazyZhu/badvpn,PowerOlive/badvpn,Git-Host/badvpn,Git-Host/badvpn,linfengfeiye/badvpn,binondord/badvpn