Authentication is failing in the cookbook demo

Right now Android posts the following:

{"password":"123","loginName":"john"

to

http://controller-aerogear.rhcloud.com/aerogear-controller-demo/login

and receives

HTTP/1.1 400 Bad Request

{"error":"AG_CONTROLLER000010: Parameter: 'password' was missing from Request"}

Steps to reproduce:

Install the cookbook demo
Select "How to Use Authentication"
Select "Login"

Expected behavior: The screen should indicate that you are logged in and logout should be an option

Actual Behavior:
The Toast pops up with an error saying the server returned 400.