Make compatible with oauth2client v2.0.0
The v2.0.0 release moved a few modules to a subpackage of oauth2client
called contrib. Among these was the locked_file module necessary for
credential storage.
Sample code for Django, App Engine and Service Accounts needed updates
as well.
diff --git a/samples/tasks_appengine/main.py b/samples/tasks_appengine/main.py
index 9b0c856..634f39c 100644
--- a/samples/tasks_appengine/main.py
+++ b/samples/tasks_appengine/main.py
@@ -16,7 +16,7 @@
from webapp2_extras import jinja2
from googleapiclient.discovery import build
-from oauth2client.appengine import OAuth2Decorator
+from oauth2client.contrib.appengine import OAuth2Decorator
import settings