Add sample_generator.py and update samples to via generator.

Reviewed in: http://codereview.appspot.com/4449062/
diff --git a/samples/src/buzz.py b/samples/src/buzz.py
new file mode 100644
index 0000000..10451e2
--- /dev/null
+++ b/samples/src/buzz.py
@@ -0,0 +1,41 @@
+# version: v1
+# scope: https://www.googleapis.com/auth/buzz
+# title: Simple command-line sample for Buzz.
+# description: Command-line application that retrieves the users latest content and then adds a new entry.
+
+  activities = service.activities()
+
+  # Retrieve the first two activities
+  activitylist = activities.list(
+      max_results='2', scope='@self', userId='@me').execute()
+  print "Retrieved the first two activities"
+
+  # Retrieve the next two activities
+  if activitylist:
+    activitylist = activities.list_next(activitylist).execute()
+    print "Retrieved the next two activities"
+
+  # Add a new activity
+  new_activity_body = {
+      'title': 'Testing insert',
+      'object': {
+        'content':
+        u'Just a short note to show that insert is working. ☄',
+        'type': 'note'}
+      }
+  activity = activities.insert(userId='@me', body=new_activity_body).execute()
+  print "Added a new activity"
+
+  activitylist = activities.list(
+      max_results='2', scope='@self', userId='@me').execute()
+
+  # Add a comment to that activity
+  comment_body = {
+      "content": "This is a comment"
+      }
+  item = activitylist['items'][0]
+  comment = service.comments().insert(
+      userId=item['actor']['id'], postId=item['id'], body=comment_body
+      ).execute()
+  print 'Added a comment to the new activity'
+  pprint.pprint(comment)