Remove donate link

git-svn-id: https://plugins.svn.wordpress.org/auto-sticky-post/trunk@843750 b8457f37-d9ea-0310-8a92-e5e31aec5664
Fix readme.txt syntax

git-svn-id: https://plugins.svn.wordpress.org/auto-sticky-post/trunk@843752 b8457f37-d9ea-0310-8a92-e5e31aec5664
Fix readme.txt syntax

git-svn-id: https://plugins.svn.wordpress.org/auto-sticky-post/trunk@843754 b8457f37-d9ea-0310-8a92-e5e31aec5664