title: Set no item pre-selected in Bottom Navigation view
body: <p>I'm adding the new Bottom Navigation View from the material design library to a project, and I would like to have no pre selected item by default. </p>
  
  <p>For now first item is selected by default. </p>
  
  <p>I have used </p>
  
  <pre><code>mBottomNavigation.getMenu().getItem(0).setChecked(false);
  </code></pre>
  
  <p>but when doing it in for loop for all the menu item last item is selected again by default. </p>
  
  <p>Is there a way we can achieve this?</p>