Update readme

git-svn-id: https://plugins.svn.wordpress.org/visual-website-editor/trunk@890043 b8457f37-d9ea-0310-8a92-e5e31aec5664
Update readme

git-svn-id: https://plugins.svn.wordpress.org/visual-website-editor/trunk@890044 b8457f37-d9ea-0310-8a92-e5e31aec5664