make php 5.2 compliant

git-svn-id: https://plugins.svn.wordpress.org/riddle-playful-content-on-the-go/trunk@938722 b8457f37-d9ea-0310-8a92-e5e31aec5664
improved help

git-svn-id: https://plugins.svn.wordpress.org/riddle-playful-content-on-the-go/trunk@938725 b8457f37-d9ea-0310-8a92-e5e31aec5664