Clarify commandline args and json
Clarify commandline args and json

ZeaLoVe/skydns,yonglehou/skydns,loveshell/skydns,andrewrothstein/skydns,tuannvm/skydns,weekface/skydns,hw-qiaolei/skydns,tonicbupt/skydns,vinhhrv/skydns,skynetservices/skydns,netf/skydns,nicescale/skydns,erimatnor/skydns-kubernetes,no2key/skydns,smarterclayton/skydns,AdoHe/skydns,zvelo/zvelo-skydns,zhang0137/skydns