adding new readme.txt

git-svn-id: https://plugins.svn.wordpress.org/infocc-autotagging/trunk@953647 b8457f37-d9ea-0310-8a92-e5e31aec5664
more read me changes

git-svn-id: https://plugins.svn.wordpress.org/infocc-autotagging/trunk@953648 b8457f37-d9ea-0310-8a92-e5e31aec5664