clean up JS directory

git-svn-id: https://plugins.svn.wordpress.org/jquery-updater/trunk@845611 b8457f37-d9ea-0310-8a92-e5e31aec5664
README.md

git-svn-id: https://plugins.svn.wordpress.org/jquery-updater/trunk@845612 b8457f37-d9ea-0310-8a92-e5e31aec5664
init uninstall.php

git-svn-id: https://plugins.svn.wordpress.org/jquery-updater/trunk@845613 b8457f37-d9ea-0310-8a92-e5e31aec5664
update plugin to 2.1.0

git-svn-id: https://plugins.svn.wordpress.org/jquery-updater/trunk@845614 b8457f37-d9ea-0310-8a92-e5e31aec5664