adding socialmediaenhancer by macx

git-svn-id: http://plugins.svn.wordpress.org/socialmediaenhancer/trunk@535475 b8457f37-d9ea-0310-8a92-e5e31aec5664
first commit from the latest version from github

git-svn-id: http://plugins.svn.wordpress.org/socialmediaenhancer/trunk@696466 b8457f37-d9ea-0310-8a92-e5e31aec5664
merge wordpress svn and git