Add note about bbpress working with our plugin.

git-svn-id: https://plugins.svn.wordpress.org/post-profit-stats/trunk@784552 b8457f37-d9ea-0310-8a92-e5e31aec5664
note about bbpress moved

git-svn-id: https://plugins.svn.wordpress.org/post-profit-stats/trunk@784553 b8457f37-d9ea-0310-8a92-e5e31aec5664