code: function log(results, stream) {
    stream = stream || process.stdout;
  
    if (results instanceof Error) {
      results = results.meta;
    }
  
    if (!_isFormatted(results)) {
      results = format(results);
    }
  
    stream.write(_join(results));
  }
docs: Logs a results Object out to a given write stream.
  
  The stream defaults to `process.stdout`, and results
  will be formatted on-demand if needed.
  
  @param results our Object containing validation results.
  @param stream a write stream to write the log to.