Update MSVC readme.
Update MSVC readme.

GroestlCoin/libgroestlcoin,GroestlCoin/libgroestlcoin,GroestlCoin/libgroestlcoin,swansontec/libbitcoin,swansontec/libbitcoin,libtetcoin/libtetcoin-consensus,GroestlCoin/libgroestlcoin,libmetrocoin/libmetrocoin-consensus,libtetcoin/libtetcoin-consensus,libmetrocoin/libmetrocoin-consensus,libtetcoin/libtetcoin-consensus,libmetrocoin/libmetrocoin-consensus,libmetrocoin/libmetrocoin-consensus,libtetcoin/libtetcoin-consensus,libmetrocoin/libmetrocoin-consensus,libtetcoin/libtetcoin-consensus,swansontec/libbitcoin,swansontec/libbitcoin