post request regular expression fix

git-svn-id: https://plugins.svn.wordpress.org/magadanski-similar-posts/trunk@920330 b8457f37-d9ea-0310-8a92-e5e31aec5664
version update

git-svn-id: https://plugins.svn.wordpress.org/magadanski-similar-posts/trunk@920335 b8457f37-d9ea-0310-8a92-e5e31aec5664