add REST endpoint

lib/expressapp.js

@@ -711,6 +711,28 @@ ExpressApp.prototype.start = function(opts, cb) {
     });
   });
 
+
+  router.post('/v1/txconfirmations/', function(req, res) {
+    getServerWithAuth(req, res, function(server) {
+      server.txConfirmationSubscribe(req.body, function(err, response) {
+        if (err) return returnError(err, res, req);
+        res.json(response);
+      });
+    });
+  });
+
+  router.delete('/v1/txconfirmations/:txid', function(req, res) {
+    var opts = {
+      txid: req.params['txid'],
+    };
+    getServerWithAuth(req, res, function(server) {
+      server.txConfirmationUnsubscribe(opts, function(err, response) {
+        if (err) return returnError(err, res, req);
+        res.json(response);
+      });
+    });
+  });
+
   this.app.use(opts.basePath || '/bws/api', router);
 
   WalletService.initialize(opts, cb);