Test fixes for Python 2.6

Author: oschwald

tests/webservices_test.py

@@ -7,10 +7,14 @@
 import geoip2
 import json
 import requests
-import unittest
 from geoip2.errors import GeoIP2Error, GeoIP2HTTPError, GeoIP2WebServiceError
 from geoip2.webservices import Client
 
+if sys.version_info[:2] == (2, 6):
+    import unittest2 as unittest
+else:
+    import unittest
+
 try:
     from unittest.mock import MagicMock, patch
 except ImportError: