title: Add Custom Icon in Ionic 2
body: <p>I am using Ionic 2 for developing my App. I want to use my custom icons in my app like we use ionic 2 icons using <strong></strong> tag. Eg:</p>
  
  <pre><code>&lt;ion-icon name="my-custom-icon"&gt;&lt;/ion-icon&gt;
  </code></pre>
  
  <p>How can i achieve this? Is there any recommended way to doing this?</p>