Change header response to 40x with json message

[Phang Mulianto]

Hi ,

another question from me. 

i already look here https://groups.google.com/forum/#!searchin/chicagoboss/status$20code$20to$20401%7Csort:relevance/chicagoboss/FUnqDyAzgZs/jIyT5kgkeIQJ

and here 

https://github.com/ChicagoBoss/ChicagoBoss/blob/5af2341da15af87b481246175cb44c699d433ca3/src/boss/boss_web_controller.erl#L496

and try, but i cannot sent with an error message payload.

but i Only got 40x response like 401 / 403.

I try to create a rest api with CB.

Thanks,

Mulianto