title: Scale button`s icon in Flex for mobile applications
body: <p>Use Flex 4.5.1 and when add icons to the button is so curve effect of scaling. 
  Prompt how to make a proportional scaling icons?<img src="https://i.stack.imgur.com/mGoVW.jpg" alt="No aspect ratio icon"></p>
  
  <pre><code>&lt;s:Button width="100%" height="50" label="Create new map" click="button3_clickHandler(event)"
                fontSize="22" icon="@Embed('icons/001-folder.png')"&gt;
  </code></pre>