title: Disable winston's verbose startup logs
body: <p>When my app starts winston logs all kinds of stuff, e.g. </p>
  
  <pre><code>winston:create-logger Define prototype method for "error"
  winston:create-logger Define prototype method for "warn"
  winston:create-logger Define prototype method for "info"
  winston:create-logger Define prototype method for "http"
  winston:create-logger Define prototype method for "verbose"
  winston:create-logger Define prototype method for "debug"
  winston:create-logger Define prototype method for "silly"
  winston:file written true false
  winston:file stat done: combined.log
  ...lots more
  </code></pre>
  
  <p>How can I disable this?</p>