Update text regarding beta version
Update text regarding beta version

sakazz/exchange,bitsquare/bitsquare,metabit/bitsquare,bisq-network/exchange,metabit/bitsquare,haiqu/bitsquare,bisq-network/exchange,haiqu/bitsquare,ManfredKarrer/exchange,ManfredKarrer/exchange,sakazz/exchange,bitsquare/bitsquare