BIP 39: link BitcoinJS & blockchain.info implementation

BIP 39 mnemonics are featured quite prominently in the UI as well.

Author: Sjors

bip-0039.mediawiki

@@ -139,4 +139,6 @@ Haskell - https://github.com/haskoin/haskoin
 
 .NET C# (PCL) - https://github.com/NicolasDorier/NBitcoin
 
-JavaScript - https://github.com/bitpay/bitcore-mnemonic
+JavaScript:
+* https://github.com/bitpay/bitcore-mnemonic
+* https://github.com/bitcoinjs/bip39 (used by [[https://github.com/blockchain/My-Wallet-V3/blob/v3.8.0/src/hd-wallet.js#L121-L146|blockchain.info public beta]])