Cleaned up OAuth 2.0 support fully using Storage() and updating samples.
diff --git a/samples/oauth2/appengine/main.py b/samples/oauth2/appengine/main.py
index 981e392..78634e7 100644
--- a/samples/oauth2/appengine/main.py
+++ b/samples/oauth2/appengine/main.py
@@ -45,7 +45,8 @@
   @login_required
   def get(self):
     user = users.get_current_user()
-    credentials = StorageByKeyName(Credentials, user.user_id(), 'credentials').get()
+    credentials = StorageByKeyName(
+        Credentials, user.user_id(), 'credentials').get()
 
     if credentials:
       http = httplib2.Http()
@@ -87,7 +88,8 @@
     flow = pickle.loads(memcache.get(user.user_id()))
     if flow:
       credentials = flow.step2_exchange(self.request.params)
-      StorageByKeyName(Credentials, user.user_id(), 'credentials').put(credentials)
+      StorageByKeyName(
+          Credentials, user.user_id(), 'credentials').put(credentials)
       self.redirect("/")
     else:
       pass