Updating to version 1.3

git-svn-id: https://plugins.svn.wordpress.org/osd-outdated-browser/trunk@1002563 b8457f37-d9ea-0310-8a92-e5e31aec5664
Fixing readme spacing

git-svn-id: https://plugins.svn.wordpress.org/osd-outdated-browser/trunk@1002565 b8457f37-d9ea-0310-8a92-e5e31aec5664