def get_user_info(*fields)
      str_fields = fields.map(&:to_s).join(',')
      url = GRAPH_URL + @user.id + '?fields=' + str_fields + '&access_token=' +
            ENV['ACCESS_TOKEN']
      begin
        return call_graph_api(url)
      rescue => e
        return false
      end
    end
def get_user_info(*fields)
      str_fields = fields.map(&:to_s).join(',')
      url = GRAPH_URL + @user.id + '?fields=' + str_fields + '&access_token=' +
            ENV['ACCESS_TOKEN']
      begin
        return call_graph_api(url)
      rescue => e
        return false
      end
    end
Get user info from Graph API. Takes names of required fields as symbols
 https://developers.facebook.com/docs/graph-api/reference/v2.2/user