title: Using Gulp to add a timestamp to filename
body: <p>Using <a href="http://gulpjs.com/" rel="nofollow">Gulp</a> I've got a pretty simple build process which compresses everything into <code>styles.min.css</code></p>
  
  <pre><code>gulp.task( 'styles', function() {
      gulp.src( './scss/*.scss' )
      .pipe( sass( { errLogToConsole: true } ) )
      .pipe( autoprefix( 'last 2 version', 'safari 5', 'ie 8', 'ie 9', 'opera 12.1', 'ios 6', 'android 4' ) )
      .pipe( cssmin() )
      .pipe( rename( 'styles.min.css' ) )
      .pipe( gulp.dest( '../dist' ) );
  });
  </code></pre>
  
  <p>Can I modify this to append a timestamp to the file name, so my browser knows this is a new file and to clear its cache?</p>
  
  <p>Something like this:</p>
  
  <p><code>styles—1423267988.min.css</code></p>