update readme 1.7.0 and 1.8.0-SNAPSHOT
update readme 1.7.0 and 1.8.0-SNAPSHOT

etaty/rediscala,mspielberg/rediscala,npeters/rediscala,npeters/rediscala,xuwei-k/rediscala,mspielberg/rediscala,xuwei-k/rediscala,etaty/rediscala