make it so that json-ish requests that are unauthorized get a json-ish response
make it so that json-ish requests that are unauthorized get a json-ish response
angjunwen/rubycas-client,lsylvester/rubycas-client,rubycas/rubycas-client,identification-io/rubycas-client,geo767/rubycas-client,Windermere/rubycas-client,angjunwen/rubycas-client