fixes and version updates

git-svn-id: https://plugins.svn.wordpress.org/multiple-category-selection-widget/trunk@969366 b8457f37-d9ea-0310-8a92-e5e31aec5664
update to text in readme

git-svn-id: https://plugins.svn.wordpress.org/multiple-category-selection-widget/trunk@969369 b8457f37-d9ea-0310-8a92-e5e31aec5664