update readme

git-svn-id: https://plugins.svn.wordpress.org/livefyre-comments/trunk@904463 b8457f37-d9ea-0310-8a92-e5e31aec5664
update version tag in livefyre.php

git-svn-id: https://plugins.svn.wordpress.org/livefyre-comments/trunk@904465 b8457f37-d9ea-0310-8a92-e5e31aec5664