grpc: Add coding Latin-1 for copyright symbol

Author: emmlejeail

ttnmqtt/ttnmqtt.py

@@ -1,7 +1,9 @@
-# Copyright 2017 The Things Network
+# coding: Latin-1
+# Copyright © 2017 The Things Network
 # Use of this source code is governed by the
 # MIT license that can be found in the LICENSE file.
 
+
 import paho.mqtt.client as mqtt
 from events import Events
 import json