title: Can I use ng2-file-upload with button instead of a file input?
body: <p>I'm using <a href="http://valor-software.com/ng2-file-upload/" rel="noreferrer">ng2-file-upload</a> (single upload example) and I want to use: <code>ng2FileSelect</code> with a button or a div instead of a file input. How can I do this?</p>
  
  <p>I want this to do something like this:</p>
  
  <pre><code>&lt;button ng2FileSelect [uploader]="uploader"&gt;Choose file&lt;/button&gt;
  </code></pre>
  
  <p>Instead of:</p>
  
  <pre><code>&lt;input type="file" ng2FileSelect [uploader]="uploader" /&gt;
  </code></pre>
  
  <p>If does not exist a clean way using <a href="http://valor-software.com/ng2-file-upload/" rel="noreferrer">ng2-file-upload</a>, do you know an alternative?</p>