gistfile1.js

               Y.io(
                    "/pdl/api/guest/user",
                    {
                        method: "POST",
                        headers: {
                            "Accept": "application/json",
                            "Content-Type": "application/json" 
                        },
                        data: Y.JSON.stringify(
                            {
                                primaryEmail: email,
                                authSecret: password,
                                firstName: firstName,
                                lastName: lastName
                            }
                        ),
                        context: this,
                        on: {
                            success: this._ioSuccess,
                            failure: this._ioFailure
                        },
                        "arguments": {
                            username: email
                        }
                    }
                );
            },