Add MX records to nimit.json for email

domains/nimit.json

@@ -4,6 +4,10 @@
     "email": "nimitjalan2013@gmail.com"
   },
   "records": {
-    "A": ["216.198.79.1"]
+    "A": ["216.198.79.1"],
+    "MX": [
+      { "target": "mx1.improvmx.com", "priority": 10 },
+      { "target": "mx2.improvmx.com", "priority": 20 }
+    ]
   }
 }