gistfile1.xml

<ApplicationManifest xmlns="http://schemas.google.com/ApplicationManifest/2009">
  <Name>Hello World</Name>
  <Description>Demonstrates a simple Google Apps Marketplace application</Description>

  <!-- Administrators and users will be sent to this URL for application support -->
  <Support>
    <Link rel="support" href="http://cbardal.com/support" />
  </Support>

  <!-- Show this link in Google's universal navigation for all users -->
  <Extension id="navLink" type="link">
    <Name>Hello World</Name>
    <Url>http://cbardal.com/login?openid_identifier=${DOMAIN_NAME}</Url> 
    <Scope ref="calendarAPI"/>
  </Extension>

  <!-- Declare our OpenID realm so our app is white listed -->
  <Extension id="realm" type="openIdRealm">
    <Url>http://cbardal.com/</Url>
  </Extension>

  <!-- Need access to the Calendar API -->
  <Scope id="calendarAPI">
    <Url>https://www.google.com/calendar/feeds/</Url>
    <Reason>This app displays the user's next upcoming Google Calendar appointment.</Reason>
  </Scope>

</ApplicationManifest>