added header

certbot_pdns/PdnsApiAuthenticator.py

+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
 import json
 
 import logging

certbot_pdns/__init__.py

+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
 """Let's Encrypt PDNS plugin"""

certbot_pdns/authenticator.py

+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
 """DNS plugin."""
 import collections
 import logging

certbot_pdns/pdnsapi.py

+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
 import json
 
 import requests