dkAntispamPlugin: changed README to include it in wiki
dkAntispamPlugin: changed README to include it in wiki

git-svn-id: 6ab9306dcd8cf22539c663b15a10e306ca0fb49a@6833 ee427ae8-e902-0410-961c-c3ed070cd9f9

Symfony-Plugins/dkAntispamPlugin