Updated README for Taggable::preloadTags
Updated README for Taggable::preloadTags

git-svn-id: c75a7c77d4d3ff845a4ae55c16a9300a0664a99f@30882 ee427ae8-e902-0410-961c-c3ed070cd9f9

aalbagarcia/sfDoctrineActAsTaggablePlugin,aalbagarcia/sfDoctrineActAsTaggablePlugin