Prevent "The plugin generated 1 character of unexpected output"

git-svn-id: https://plugins.svn.wordpress.org/simple-rating/trunk@863456 b8457f37-d9ea-0310-8a92-e5e31aec5664
Version 1.3.2

git-svn-id: https://plugins.svn.wordpress.org/simple-rating/trunk@868231 b8457f37-d9ea-0310-8a92-e5e31aec5664
readme

git-svn-id: https://plugins.svn.wordpress.org/simple-rating/trunk@868235 b8457f37-d9ea-0310-8a92-e5e31aec5664