Make the README slightly more readable
Make the README slightly more readable

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