switch to native-dns 0.7.0

Author: greggman

package.json

@@ -24,7 +24,7 @@
     "mime": "1.2.11",
     "mkdirp": "^0.5.0",
     "moxie-zip": "0.0.3",
-    "native-dns": "0.4.1",
+    "native-dns": "^0.7.0",
     "native-msg-box": "0.1.6",
     "optionator": "^0.4.0",
     "promise": "^5.0.0",