add route to sync dns records

merge the mail dns route with this one as well

fixes #737

src/routes/domains.js

@@ -1,13 +1,13 @@
 'use strict';
 
 exports = module.exports = {
-    add: add,
-    get: get,
-    getAll: getAll,
-    update: update,
-    del: del,
+    add,
+    get,
+    getAll,
+    update,
+    del,
 
-    checkDnsRecords: checkDnsRecords,
+    checkDnsRecords,
 };
 
 var assert = require('assert'),