Add php file

git-svn-id: https://plugins.svn.wordpress.org/hs-social-media-buttons/trunk@910186 b8457f37-d9ea-0310-8a92-e5e31aec5664
add readme.txt

git-svn-id: https://plugins.svn.wordpress.org/hs-social-media-buttons/trunk@910187 b8457f37-d9ea-0310-8a92-e5e31aec5664
add uninstall.php

git-svn-id: https://plugins.svn.wordpress.org/hs-social-media-buttons/trunk@910188 b8457f37-d9ea-0310-8a92-e5e31aec5664