release 1.4.2

git-svn-id: https://plugins.svn.wordpress.org/the-holiday-calendar/trunk@1038445 b8457f37-d9ea-0310-8a92-e5e31aec5664
updated readme

git-svn-id: https://plugins.svn.wordpress.org/the-holiday-calendar/trunk@1038447 b8457f37-d9ea-0310-8a92-e5e31aec5664