title: ion-list with checkbox disable in ionic framework
body: <p>Here is my <strong><a href="http://codepen.io/skpatel/pen/xGBjPx" rel="nofollow">Codepen</a></strong>.</p>
  
  <p>In this demo application I have two list arrays. One is <code>items</code> and second is <code>items1</code>.</p>
  
  <p>I want to:</p>
  
  <ol>
  <li>show list as such that where some items from <code>items</code> array should be pre-checked which are in <code>items1</code>.</li>
  <li>I do not want user to check and uncheck. So that means checkbox should be disabled.</li>
  </ol>
  
  <p>How can I do that with the demo Codepen I shared earlier. Any help would be appreciated.</p>