title: Unexpected attribute 'indexes' error while following GAE tutorial
body: <p>I am following google app engine getting started tutorials. I am at this point; <a href="https://developers.google.com/appengine/docs/python/gettingstartedpython27/templates" rel="nofollow">https://developers.google.com/appengine/docs/python/gettingstartedpython27/templates</a></p>
  
  <p>I have tried to follow it to the point, but when I started my application from google app engine launcher, I see this in the logs;</p>
  
  <pre><code>---- a long traceback, followed by ---- 
  File "C:\Program Files (x86)\Google\google_appengine\google\appengine\api\yaml_listener.py", line 177, in _HandleEvents
      raise yaml_errors.EventError(e, event_object)
  google.appengine.api.yaml_errors.EventError: Unexpected attribute 'indexes' for object of type AppInfoExternal.
    in "C:\Users\muhammed\Desktop\guestbook\app.yaml", line 18, column 1
  2013-09-12 13:01:26 (Process exited with code 1)
  </code></pre>
  
  <p>Here is how my <code>app.yaml</code> file looks like;</p>
  
  <pre><code>application: your-app-id
  version: 1
  runtime: python27
  api_version: 1
  threadsafe: true
  
  handlers:
  - url: /.*
    script: guestbook.application
  
  libraries:
  - name: webapp2
    version: latest
  - name: jinja2
    version: latest
  
  indexes:
  - kind: Greeting
    ancestor: yes
    properties:
    - name: date
      direction: desc
  </code></pre>
  
  <p>What am I doing wrong here?</p>