Add links to plugin documentation on README.md

Author: jamesfredley

README.md

@@ -19,7 +19,22 @@ limitations under the License.
 Grails Spring Security
 ======================
 
-See [documentation](https://apache.github.io/grails-spring-security/latest) for detailed information.
+See [documentation](https://apache.github.io/grails-spring-security/latest/ghpages.html) for detailed information.
+
+
+[core-plugin](https://apache.github.io/grails-spring-security/latest/core-plugin/guide/)
+
+[rest-plugin](https://apache.github.io/grails-spring-security/latest/rest-plugin/guide/)
+
+[ui-plugin](https://apache.github.io/grails-spring-security/latest/ui-plugin/guide/)
+
+[acl-plugin](https://apache.github.io/grails-spring-security/latest/acl-plugin/guide/)
+
+[ldap-plugin](https://apache.github.io/grails-spring-security/latest/ldap-plugin/guide/)
+
+[cas-plugin](https://apache.github.io/grails-spring-security/latest/cas-plugin/guide/)
+
+[oauth2-plugin](https://apache.github.io/grails-spring-security/latest/oauth2-plugin/guide/)
 
 ### Building