title: Express-Winston: Write Express Access Logs to File
body: <p>Is it possible to only write the access lines from express to a log file, and keep the other logs in the console? Something like this:</p>
  
  <pre><code>app.use(expressWinston.logger({
      transports: [
          new winston.transports.Console({
              colorize: true
          }),
          new winston.transports.File({
              name: 'access-file',
              filename: 'access-error.log',
              level: 'info' //This setting is what i need to change for access lines only
          })
      ],
      ignoreRoute: function(req) {
          return (req.url === '/healthcheck');
      },
      meta: false, 
      msg: "HTTP {{req.method}} {{req.url}}", 
      colorStatus: true
  }));
  </code></pre>
  
  <p>The problem is that I do not know how to isolate just the access log lines. Is this possible?</p>