include new param display_media

git-svn-id: https://plugins.svn.wordpress.org/jm-last-twit-shortcode/trunk@918222 b8457f37-d9ea-0310-8a92-e5e31aec5664
update version number in readme.txt

git-svn-id: https://plugins.svn.wordpress.org/jm-last-twit-shortcode/trunk@918226 b8457f37-d9ea-0310-8a92-e5e31aec5664