Documentation: Document unix and unixs URL schemes
Documentation: Document unix and unixs URL schemes

ajityagaty/etcd,dannysauer/etcd,li-ang/etcd,etcd-io/etcd,rnaveiras/etcd,joshix/etcd,ajityagaty/etcd,dannysauer/etcd,mkumatag/etcd,rnaveiras/etcd,mqliang/etcd,cockroachdb/etcd,joshix/etcd,cockroachdb/etcd,mqliang/etcd,coreos/etcd,ajityagaty/etcd,li-ang/etcd,coreos/etcd,mqliang/etcd,xiang90/etcd,rnaveiras/etcd,mkumatag/etcd,etcd-io/etcd,gyuho/etcd,etcd-io/etcd,gyuho/etcd,mkumatag/etcd,xiang90/etcd