Add P2WSH and P2WSH-P2SH for bitcoin and testnet

Address generation still to come.

src/js/segwit-parameters.js

@@ -56,6 +56,62 @@ bitcoinjs.bitcoin.networks.testnet.p2wpkhInP2sh = {
     wif: 0xef
 };
 
+// p2wsh
+
+bitcoinjs.bitcoin.networks.bitcoin.p2wsh = {
+    baseNetwork: "bitcoin",
+    messagePrefix: '\x18Bitcoin Signed Message:\n',
+    bech32: 'bc',
+    bip32: {
+        public: 0x02aa7ed3,
+        private: 0x02aa7a99
+    },
+    pubKeyHash: 0x00,
+    scriptHash: 0x05,
+    wif: 0x80
+};
+
+bitcoinjs.bitcoin.networks.testnet.p2wsh = {
+    baseNetwork: "testnet",
+    messagePrefix: '\x18Bitcoin Signed Message:\n',
+    bech32: 'tb',
+    bip32: {
+        public: 0x02575483,
+        private: 0x02575048
+    },
+    pubKeyHash: 0x6f,
+    scriptHash: 0xc4,
+    wif: 0xef
+};
+
+// p2wsh in p2sh
+
+bitcoinjs.bitcoin.networks.bitcoin.p2wshInP2sh = {
+    baseNetwork: "bitcoin",
+    messagePrefix: '\x18Bitcoin Signed Message:\n',
+    bech32: 'bc',
+    bip32: {
+        public: 0x0295b43f,
+        private: 0x0295b005
+    },
+    pubKeyHash: 0x00,
+    scriptHash: 0x05,
+    wif: 0x80
+};
+
+bitcoinjs.bitcoin.networks.testnet.p2wshInP2sh = {
+    baseNetwork: "testnet",
+    messagePrefix: '\x18Bitcoin Signed Message:\n',
+    bech32: 'tb',
+    bip32: {
+        public: 0x024289ef,
+        private: 0x024285b5
+    },
+    pubKeyHash: 0x6f,
+    scriptHash: 0xc4,
+    wif: 0xef
+};
+
 bitcoinjs.bitcoin.networks.litecoin.p2wpkh = {
     baseNetwork: "litecoin",
     messagePrefix: '\x19Litecoin Signed Message:\n',