title: How to submit "Beta App Description" to iTunes Connect with fastlane deliver
body: <p>I upload my iOS app and most of the app metadata to iTunes Connect using fastlane deliver. Most of the data and screenshots can be put into files that I then have stored in git. </p>
  
  <p>This includes for example the review notes that are stored in a file</p>
  
  <pre><code>fastlane/metadata/review_information/notes.txt
  </code></pre>
  
  <p>In iTunes Connect there is a bit of information in the TestFlight part under "Test Information" called "Beta App Description". I would like to also upload this text using fastlane.</p>
  
  <p>In the fastlane deliver docs I have found the parameter called "beta_app_description" and as far as I can read, this is exactly that. This is a command parameter and as such muct be spefified directly in the Fastfile or Deliverfile. </p>
  
  <p>I would like to have fastlane load this from a file just like all the other metadata.</p>
  
  <p>Is this possible and how?</p>