def summary
      date_timestamp = Time.now.httpdate
      signature = self.build_signature('/summary', nil, 'GET', date_timestamp)
      raise ArgumentError.new('Signature returned nil. Aborting...') if signature == nil
      authorization_header = "VWS " + @accesskey + ":" + signature
      begin
        RestClient.get(SUMMARY_URL, :'Date' => date_timestamp,
                                    :'Authorization' => authorization_header)
      rescue => e
        e.response
      end
    end
def summary
      date_timestamp = Time.now.httpdate
      signature = self.build_signature('/summary', nil, 'GET', date_timestamp)
      raise ArgumentError.new('Signature returned nil. Aborting...') if signature == nil
      authorization_header = "VWS " + @accesskey + ":" + signature
      begin
        RestClient.get(SUMMARY_URL, :'Date' => date_timestamp,
                                    :'Authorization' => authorization_header)
      rescue => e
        e.response
      end
    end
Database Summary Report
 https://developer.vuforia.com/resources/dev-guide/database-summary-report