updated README.
updated README.

tuomassiren/libbitcoin-server,libmetrocoin/libmetrocoin-server,BWallet/obelisk,tuomassiren/obelisk,tuomassiren/libbitcoin-server,libmetrocoin/libmetrocoin-server,RojavaCrypto/libbitcoin-server,RojavaCrypto/libbitcoin-server,RojavaCrypto/libbitcoin-server,BWallet/obelisk,tuomassiren/obelisk,BWallet/obelisk,tuomassiren/obelisk,tuomassiren/libbitcoin-server,libmetrocoin/libmetrocoin-server