title: set time interval for laravel flash message
body: <p>I want to display flash message for 3 seconds.
  I have created flash message as session in controller.
  I have received the message in view page.but didn't disappear after 3 seconds.
  How to show flash message for 3 seconds.</p>
  
  <pre><code>controller 
   Session::flash('success', $id.' has been approved',array('timeout' =&gt; 3000), 'error');
  </code></pre>