update plugin to version 1.5

git-svn-id: https://plugins.svn.wordpress.org/processing4wp/trunk@947765 b8457f37-d9ea-0310-8a92-e5e31aec5664
update plugin to version 1.5

git-svn-id: https://plugins.svn.wordpress.org/processing4wp/trunk@947767 b8457f37-d9ea-0310-8a92-e5e31aec5664