title: How to make my app open png files?
body: <p>When a user search for images in net and he/she is selecting it, i want my app to be registered to open it. This is what I have included but the app is not detecting image files!</p>
  
  <pre><code>&lt;dict&gt;
  &lt;key&gt;CFBundleTypeName&lt;/key&gt;
  &lt;string&gt;PNG Image&lt;/string&gt;
  &lt;key&gt;CFBundleTypeRole&lt;/key&gt;
  &lt;string&gt;Viewer&lt;/string&gt;
  &lt;key&gt;CFBundleTypeExtensions&lt;/key&gt;
  &lt;array&gt;
      &lt;string&gt;png&lt;/string&gt;
      &lt;string&gt;PNG&lt;/string&gt;
  &lt;/array&gt;
  &lt;key&gt;LSHandlerRank&lt;/key&gt;
  &lt;string&gt;Alternate&lt;/string&gt;
  &lt;key&gt;LSItemContentTypes&lt;/key&gt;
  &lt;array&gt;
      &lt;string&gt;public.png&lt;/string&gt;
  &lt;/array&gt;
  &lt;/dict&gt;
  </code></pre>