title: Upgrade Ionic 2.0.0-beta.32 to latest 2.0.1 or final release
body: <p>I am trying to upgrade my Ionic environment to the latest version.</p>
  
  <p>I have an existing app I built on Ionic <code>2.0.0-beta.32</code>. I want to upgrade it to the latest version <code>2.0.1</code> (or the <code>final release</code>).</p>
  
  <p>My questions are :</p>
  
  <p>1) How can I upgrade my environment ?</p>
  
  <p>2) Is there any changes I have to do in my code ? (if yes please can you tell me exactly how to proceed it... ?)</p>