Update segwitsupport.csv

Author: azuchi

_data/segwitsupport.csv

@@ -131,3 +131,4 @@ Hardblock,https://www.hardblock.net/, ready, Broker, bitcoin core
 MoneyBadger,https://moneybadger.io,ready,"exchange, tipping, remittance",bitcoin core
 KeeeX,https://keeex.me,ready,"notarization and document proofs",
 CryptoBG,https://crypto.bg/,ready,exchange,
+bitcoin-ruby,https://github.com/lian/bitcoin-ruby,ready,library,n/a