add bitcoinj as submodule
add bitcoinj as submodule

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