fix typo

Kevin Burke · Kevin Burke · commit 75defdf3dd6f · 2013-05-20T19:54:01.000-07:00
diff --git a/twilio/rest/resources/base.py b/twilio/rest/resources/base.py
@@ -45,7 +45,7 @@ def make_request(method, url, params=None, data=None, headers=None,
             elif isinstance(v, string_types):
                 udata[key] = v.encode('utf-8')
             else:
-                raise ValueError('data should be iinteger or binary or string')
+                raise ValueError('data should be an integer, binary, or string')
         data = urlencode(udata)
 
     if params is not None:
