tweaks for travis and py3.x

Author: Josh Mervine

maxcdn/maxcdn.py

@@ -24,7 +24,7 @@ def _get_url(self, end_point):
             return self.url + end_point
 
     def _data_request(self, method, end_point, data, **kwargs):
-        if data is None and kwargs.has_key("params"):
+        if data is None and "params" in kwargs:
             params = kwargs.pop("params")
             if type(params) is str:
                 params = urlparse.parse_qs(params)