title: How to log every message in new line using winston logger?
body: <p>we are using winston logger to log events to nodejs <code>fs</code> , i want to write every event into new line using winston, is it possible with to achieve that task using winston library or any other approach that works with nodejs. </p>
  
  <p>ctrl.js</p>
  
  <pre><code>var winston = require('winston');
  var consumer = new ConsumerGroup(options, topics);
          console.log("Consumer topics:", getConsumerTopics(consumer).toString());
          logger = new (winston.Logger)({
              level: null,
              transports: [
  //                new (winston.transports.Console)(),
                  new (winston.transports.File)({
                      filename: './logs/st/server.log',
                      maxsize: 1024 * 1024 * 20,//15728640 is 15 MB
                      timestamp: false,
                      json: false,
                      formatter: function (options) {
                          return options.message;
                      }
                  })
              ]
          });
          function startConsumer(consumer) {
              consumer.on('message', function (message) {
                  logger.log('info', message.value);
                  //callback(message.value);
                  io.io().emit('StConsumer', message.value);
              });
              consumer.on('error', function (err) {
                  console.log('error', err);
              });
          };
          startConsumer(consumer);
  </code></pre>