Developer credits

Git commits in Moodle 2.2.x by Tim Barker

commit db181b6a147d8e84f3f91ba7cf002f341e277f68
Author: Tim Barker <timb@moodle.com>
Date:   Fri, 01 Jun 2012 13:21:38 +0800
Tag:    v2.2.4

MDL-33476 repositories: Added instructions to assist with setting up Dropbox keys