Update renomerx.json to add ImprovMX email records

domains/renomerx.json

@@ -4,6 +4,13 @@
         "email": "renomerx@gmail.com"
     },
     "records": {
-        "A": ["75.2.60.5"]
+        "A": [
+            "75.2.60.5"
+        ],
+        "MX": [
+            { "target": "mx1.improvmx.com", "priority": 10 },
+            { "target": "mx2.improvmx.com", "priority": 20 }
+        ],
+        "TXT": "v=spf1 include:spf.improvmx.com ~all"
     }
-}
+}