def create_user(name, email, datum = nil)
      current_path = '/api/v1/users'
      payload = { name: name, mail: email }
      payload.merge!(datum) unless datum.nil?
      @conn.post(current_path, payload.to_json)
    end
def create_user(name, email, datum = nil)
      current_path = '/api/v1/users'
      payload = { name: name, mail: email }
      payload.merge!(datum) unless datum.nil?
      @conn.post(current_path, payload.to_json)
    end
Creates a user.
 @param [String] name
 @param [String] email
 @param [Hash] datum hash with elements :pass => string,
                                        :status => 0|1,
                                        :roles => Array