Updated readme.txt

git-svn-id: https://plugins.svn.wordpress.org/link-exchange-true-automatic-link-exchange-trafficfeed/trunk@836570 b8457f37-d9ea-0310-8a92-e5e31aec5664
updated readme.txt

git-svn-id: https://plugins.svn.wordpress.org/link-exchange-true-automatic-link-exchange-trafficfeed/trunk@836571 b8457f37-d9ea-0310-8a92-e5e31aec5664