some changes in url

git-svn-id: https://plugins.svn.wordpress.org/advanced-twitter-followers-widget/trunk@1003818 b8457f37-d9ea-0310-8a92-e5e31aec5664
readme.txt change

git-svn-id: https://plugins.svn.wordpress.org/advanced-twitter-followers-widget/trunk@1003823 b8457f37-d9ea-0310-8a92-e5e31aec5664