404 from server: provide more informative message
json2yaml -u:http://rackerlabs.github.io/wadl2swagger/openstack/swagger/dbaas.jsn -o:samples/bad.yaml
404 http response. Error message looks this:
Http response Contetnt type must be json, text/html is not supported.
It will be better to display 404 resource not found exception.
Only one consideration. What if 404 is returned as json and user wants to convert its content to yaml.