Added TokenPay Testnet

Author: devalexn

src/currencies.js

@@ -159,14 +159,15 @@ var CURRENCIES = [{
 },{
     name: 'tokenpay',
     symbol: 'tpay',
-    addressTypes: {prod: ['41', '7e'], testnet: []}
+    addressTypes: {prod: ['41', '7e'], testnet: ['7f', 'c4']}
 },{
     name: 'verge',
     symbol: 'xvg',
     addressTypes: {prod: ['1e', '33'], testnet: ['6f', 'c4']}
 }];
 
 
+
 module.exports = {
     getByNameOrSymbol: function (currencyNameOrSymbol) {
         var nameOrSymbol = currencyNameOrSymbol.toLowerCase();