function watcher_log_callback (event) {
   var relative_path = event.path.replace(__dirname, '');
   gutil.log('file ' + gutil.colors.magenta(relative_path) + ' ' + event.type);
 }
/*.scss',
        SOURCES + '/sprites/*.png',
        SOURCES + '/icons/*.svg'
      ], ['styles' /*, 'lint:styles'