Update canavan.json

Added MX and TXT records for email forwarding through ImprovMX

domains/canavan.json

@@ -8,5 +8,12 @@
     },
     "record": {
         "CNAME": "ninja-5000.github.io"
+    },
+    "record": {
+        "MX": [
+            "mx1.improvmx.com.",
+            "mx2.improvmx.com."
+        ],
+        "TXT": "v=spf1 include:spf.improvmx.com ~all"
     }
-} 
+}