Fix up discovery_extras.py for v0.2beta1 support
diff --git a/samples/buzz/buzz.py b/samples/buzz/buzz.py
index 14b5ea1..a49e3a6 100644
--- a/samples/buzz/buzz.py
+++ b/samples/buzz/buzz.py
@@ -28,7 +28,7 @@
   http = httplib2.Http()
   http = credentials.authorize(http)
 
-  p = build("buzz", "v1", http=http)
+  p = build("buzz", "v1", http=http, developerKey="AIzaSyDRRpR3GS1F1_jKNNM9HCNd2wJQyPG3oN0")
   activities = p.activities()
 
   # Retrieve the first two activities