VOV-1182: Attaching [an invalid] media file to Avalon item produces following error: "Unknown identifier  The identifier you provided could not be found in the system. If this problem persists contact your support person."
update install instructions
destroy() stops matterhorn workflow for the master file
spacing
try to stop matterhorn jobs when a media object is destroyed
Merge pull request #29 from avalonmediasystem/attaching_an_invalid_file_to_a_media_object_produces_error

Attaching an invalid file to a media object produces error