added support link

git-svn-id: https://plugins.svn.wordpress.org/portfolio-magic/trunk@1011460 b8457f37-d9ea-0310-8a92-e5e31aec5664
fix some mistakes at readme

git-svn-id: https://plugins.svn.wordpress.org/portfolio-magic/trunk@1011473 b8457f37-d9ea-0310-8a92-e5e31aec5664