readme fix

git-svn-id: https://plugins.svn.wordpress.org/wp-conversion-by-rightune/trunk@813658 b8457f37-d9ea-0310-8a92-e5e31aec5664
readme fix

git-svn-id: https://plugins.svn.wordpress.org/wp-conversion-by-rightune/trunk@813660 b8457f37-d9ea-0310-8a92-e5e31aec5664