Added retargeting apps to description

git-svn-id: https://plugins.svn.wordpress.org/social-sharing-buttons-by-addshoppers/trunk@870278 b8457f37-d9ea-0310-8a92-e5e31aec5664
tags...

git-svn-id: https://plugins.svn.wordpress.org/social-sharing-buttons-by-addshoppers/trunk@870279 b8457f37-d9ea-0310-8a92-e5e31aec5664