title: Winston Logger return exact logged string
body: <p>I'm using Winston to do logging for my node application. I'm trying to achieve grabbing exactly value Winston logged into the log file. Example in this scenario it will return :- </p>
  
  <p><code>{"message":"New S3!","level":"info"}</code></p>
  
  <p>I've tested to console log the function and check certain package function in the winston, so far couldn't find any way to return it.</p>
  
  <p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
  <div class="snippet-code">
  <pre class="snippet-code-js lang-js prettyprint-override"><code>var logger = winston.createLogger({
   transports: [
    transport, //This is to upload to 
    new winston.transports.File(options.file), //Will log into file
    new winston.transports.Console(options.console) //Will log at console display
   ]
  });
  
  var loggedVal = logger.info('New S3!');
  console.log(loggedVal);</code></pre>
  </div>
  </div>
  </p>