Fixed array return-and-references for old PHP versions

git-svn-id: https://plugins.svn.wordpress.org/skip-to-timestamp/trunk@1024277 b8457f37-d9ea-0310-8a92-e5e31aec5664
Updated readme

git-svn-id: https://plugins.svn.wordpress.org/skip-to-timestamp/trunk@1024278 b8457f37-d9ea-0310-8a92-e5e31aec5664