Add more reference implementations

Author: sipa

bip-0173.mediawiki

@@ -242,8 +242,10 @@ P2PKH addresses can be used.
 * Reference encoder and decoder:
 ** [https://github.com/sipa/bech32/tree/master/ref/c For C]
 ** [https://github.com/sipa/bech32/tree/master/ref/javascript For JavaScript]
+** [https://github.com/sipa/bech32/tree/master/ref/go For Go]
 ** [https://github.com/sipa/bech32/tree/master/ref/python For Python]
 ** [https://github.com/sipa/bech32/tree/master/ref/haskell For Haskell]
+** [https://github.com/sipa/bech32/tree/master/ref/ruby For Ruby]
 ** [https://github.com/sipa/bech32/tree/master/ref/rust For Rust]
 
 * Fancy decoder that localizes errors: