How can i do for create or update using the API with RocketPants (From: https://github.com/filtersquad/rocket_pants/issues/5)

gistfile1.rb

class UsersController < RocketPants::Base

  version 1

  def index
    expose User.paginate per_page: 10, page: params[:page]
  end

  def show
    expose user
  end

  def update
    user.update_attributes! params[:user]
    expose user
  end

  def create
    expose User.create!(params[:user]), status: :created
  end

  def destroy
    user.destroy
    redirect_to users_path(version: 1)
  end

  private

  def user
    @user ||= User.find(params[:id])
  end

end