added note about having to add :enable_single_sign_out => true to the config in order to enable single-sign-out functionality
added note about having to add :enable_single_sign_out => true to the config in order to enable single-sign-out functionality

Windermere/rubycas-client,identification-io/rubycas-client,lsylvester/rubycas-client,angjunwen/rubycas-client,angjunwen/rubycas-client,rubycas/rubycas-client,geo767/rubycas-client,desaperados/rubycas-client,CruGlobal/ccc_rubycas_client