update readme

git-svn-id: https://plugins.svn.wordpress.org/enhanced-tooltipglossary/trunk@903854 b8457f37-d9ea-0310-8a92-e5e31aec5664
update readme

git-svn-id: https://plugins.svn.wordpress.org/enhanced-tooltipglossary/trunk@903855 b8457f37-d9ea-0310-8a92-e5e31aec5664