title: Package Firefox XPI without Mac hidden files
body: <p>Mac OS creates <code>.DS_Store</code> hidden files, among others. I've created a Firefox addon that runs just fine, but when I send it to the Validator, I get warnings asking me to delete the hidden files. I've turned on hidden files and attempted to just delete them and repackage the addon, but the files just reappear a few seconds later. How can I delete these files and package my extension to avoid these warnings?</p>
  
  <p>Note: this question shouldn't be considered a duplicate of this question: <a href="https://stackoverflow.com/questions/2130324/how-do-you-create-a-xpi-package-on-a-mac">How do you create a .XPI package on a mac</a></p>