scan_download scan_id [format]
        Will download an individual scan and return a string with the results.

def scan_download(self, scan_id, format='v2'):
        """scan_download scan_id [format]
        Will download an individual scan and return a string with the results.
        """
        payload = {
            'downloadType': format,
            'scanResultID': scan_id,
        }
        data = self.raw_query('scanResult', 'download', data=payload, dejson=False)
        bobj = StringIO()
        bobj.write(data)
        zfile = ZipFile(bobj)
        return zfile.read(zfile.namelist()[0])