deleting old readme

git-svn-id: https://plugins.svn.wordpress.org/category-widget/trunk@812499 b8457f37-d9ea-0310-8a92-e5e31aec5664
new 1.3 added

git-svn-id: https://plugins.svn.wordpress.org/category-widget/trunk@812500 b8457f37-d9ea-0310-8a92-e5e31aec5664