Add coding/utf8 annotations to fix special characters for python 2.7

examples/example.py

@@ -1,4 +1,5 @@
 #!/usr/bin/python
+# -*- coding: utf-8 -*-
 
 import logging
 from inema import Internetmarke

inema/__init__.py

@@ -1,2 +1,3 @@
+# -*- coding: utf-8 -*-
 from .inema import Internetmarke
 from .inema import __version__

inema/inema.py

@@ -1,4 +1,5 @@
 #!/usr/bin/python
+# -*- coding: utf-8 -*-
 
 from datetime import datetime
 from pytz import timezone