title: add folder to bundle when building mac installer using javapackager
body: <p>I've used <a href="https://docs.oracle.com/javase/8/docs/technotes/tools/unix/javapackager.html" rel="nofollow noreferrer">javapackager</a> to create installer for my java program, in order to run into mac OS X. There is some files and a single folder which needs to be bundle while performing the bundalation process from javapackager. My programs folder structure looks like this:</p>
  
  <p><a href="https://i.stack.imgur.com/V4iC2.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/V4iC2.png" alt="enter image description here"></a></p>
  
  <p>Now I issued the following command from terminal:</p>
  
  <pre><code>$ /Library/Java/JavaVirtualMachines/jdk1.8.0_65.jdk/Contents/Home/bin/javapackager -deploy -native dmg -Bruntime=jre1.8.0_65.jre/ -srcfiles IPSettingScreen.jar  -srcfiles configuration.properties -srcfiles vremployee.jar -srcdir "native" -appclass ipsettingscreen.IPSettingScreen -name vr-employee -outdir deploy/ -outfile vr-employee -v
  </code></pre>
  
  <p>It sucessfully bundeld into the vr-employee.dmg, now if I installed vr-employee.dmg and look into the program installation directory there I could not found <strong>native</strong> folder which is library folder. In order to run my java program that native folder should be exist.
  Now my question is how to add folder into that bundled? 
  Thanks!!</p>