add v2/balance endpoint

lib/expressapp.js

@@ -314,6 +314,7 @@ ExpressApp.prototype.start = function(opts, cb) {
     });
   });
 
+  // DEPRECATED
   router.get('/v1/balance/', function(req, res) {
     getServerWithAuth(req, res, function(server) {
       server.getBalance({}, function(err, balance) {
@@ -323,6 +324,15 @@ ExpressApp.prototype.start = function(opts, cb) {
     });
   });
 
+  router.get('/v2/balance/', function(req, res) {
+    getServerWithAuth(req, res, function(server) {
+      server.getBalance2Steps({}, function(err, balance) {
+        if (err) return returnError(err, res, req);
+        res.json(balance);
+      });
+    });
+  });
+
   // DEPRECATED
   router.get('/v1/feelevels/', function(req, res) {
     var opts = {};

test/storage.js

@@ -77,6 +77,7 @@ describe('Storage', function() {
       });
     });
   });
+
   describe('Copayer lookup', function() {
     it('should correctly store and fetch copayer lookup', function(done) {
       var wallet = Model.Wallet.create({