adds "bitcoincore" network, and adds #translate to Address"

lib/address.js

@@ -437,6 +437,29 @@ Address.isValid = function(data, network, type) {
   return !Address.getValidationError(data, network, type);
 };
 
+
+/**
+ * Translates an address to other network
+ *
+ * @param {Address} address object - Bitcore address
+ * @param {string} network - name of the network to translate the address to
+ *
+ * @returns {Address} Bitcore address object
+ */
+Address.translate = function(address, toNetwork) {
+  if (!Networks.get(toNetwork)) {
+    throw new TypeError('Unknown network ' + toNetwork);
+  }
+
+  var orig = new Address(address);
+  var origObj = orig.toObject();
+
+  origObj.network = toNetwork;
+  return new Address.fromObject(origObj);
+};
+
+
+
 /**
  * Returns true if an address is of pay to public key hash type
  * @return boolean

lib/networks.js

@@ -252,6 +252,25 @@ function disableRegtest() {
   testnet.regtestEnabled = false;
 }
 
+addNetwork({
+  name: 'bitcoincore',
+  alias: 'core',
+  pubkeyhash: 0,
+  privatekey: 0xef,
+  scripthash: 5,
+  xpubkey: 0x043587cf,
+  xprivkey: 0x04358394,
+  dnsSeeds: [
+    'seed.bitcoin.sipa.be',
+    'dnsseed.bluematt.me',
+    'dnsseed.bitcoin.dashjr.org',
+    'seed.bitcoinstats.com',
+    'seed.bitnodes.io',
+    'bitseed.xf2.org'
+  ]
+});
+
+
 /**
  * @namespace Networks
  */

test/address.js

@@ -309,6 +309,18 @@ describe('Address', function() {
       new Address(hash, 'livenet').toString().should.equal(str);
     });
 
+
+    it('should translate an address to other network', function() {
+      var hash = pubkeyhash; //use the same hash
+      var a = Address.fromPublicKeyHash(hash, 'livenet');
+      a.toString().should.equal('CMxTMLHVazpmroYhw2bfXNJFyxLuX4srpv');
+      a.toObject().network.should.equal('livenet');
+
+      var a2 = Address.translate(a,"bitcoincore");
+      a2.toString().should.equal('16VZnHwRhwrExfeHFHGjwrgEMq8VcYPs9r');
+      a2.toObject().network.should.equal('bitcoincore');
+    });
+
     it('should make an address using the default network', function() {
       var hash = pubkeyhash; //use the same hash
       var network = Networks.defaultNetwork;