title: Can you install the same downloaded testflight build on multiple devices
body: <p>I'm looking for a way to pre-download the apk files for testers so they can install them from my website instead of downloading directly from testflight. The main reason is that we noticed testflight servers to be very slow at times and testers fail to install latest builds. 
  I'm not sure how the extra information (user, device) is added to the testflight logs that are sent to the server. Is the apk file modified to include the extra information or is the API simply sending the logs through the testflight app which attaches all the needed info.</p>