version 0.4.0

git-svn-id: https://plugins.svn.wordpress.org/yet-another-stars-rating/trunk@954107 b8457f37-d9ea-0310-8a92-e5e31aec5664
fixed readme

git-svn-id: https://plugins.svn.wordpress.org/yet-another-stars-rating/trunk@954110 b8457f37-d9ea-0310-8a92-e5e31aec5664