updated meta-data

git-svn-id: https://svn.wp-plugins.org/sailthru-widget/trunk@395683 b8457f37-d9ea-0310-8a92-e5e31aec5664
Merge branch 'master' of github.com:sailthru/sailthru-wordpress-plugin

git-svn-id: https://svn.wp-plugins.org/sailthru-widget/trunk@650338 b8457f37-d9ea-0310-8a92-e5e31aec5664
bump version to 2.1