assets screenshots description

git-svn-id: https://plugins.svn.wordpress.org/trackduck/trunk@900275 b8457f37-d9ea-0310-8a92-e5e31aec5664
description updated

git-svn-id: https://plugins.svn.wordpress.org/trackduck/trunk@900276 b8457f37-d9ea-0310-8a92-e5e31aec5664