title: Prevent auto sign in with Google plus
body: <p>I am trying to implement Google+ sign in for web sites. </p>
  
  <p>My desired flow is:</p>
  
  <ol>
  <li>User lands on login page</li>
  <li>Clicks Google Sign In button</li>
  <li>I receive email and processing it on server side</li>
  </ol>
  
  <p>The problem is, whatever script I try, Google always invoking and UNWANTED auto sign in. I want it to be initiated only when user clicks the button and prevent auto triggering google events.</p>