added linkage

git-svn-id: https://plugins.svn.wordpress.org/sumome/trunk@875919 b8457f37-d9ea-0310-8a92-e5e31aec5664
added linkage

git-svn-id: https://plugins.svn.wordpress.org/sumome/trunk@875921 b8457f37-d9ea-0310-8a92-e5e31aec5664