title: Include all files in a folder in a single bundle
body: <p>When using <code>BundleConfig</code> is it possible to include all files of a folder including all the files of the childfolders (and their childfolders etc.)?</p>
  
  <p>I found <code>.IncludeDirectory()</code> but it seems to only include the files of the folder itself, not the files of the subfolders.</p>