code: function( files ) {
                  var me = this;
      
                  if ( !files.length ) {
                      files = [ files ];
                  }
      
                  files = $.map( files, function( file ) {
                      return me._addFile( file );
                  });
      
                  me.owner.trigger( 'filesQueued', files );
      
                  if ( me.options.auto ) {
                      setTimeout(function() {
                          me.request('start-upload');
                      }, 20 );
                  }
              }
docs: @property {Boolean} [auto=false]
  @namespace options
  @for Uploader
  @description 设置为 true 后，不需要手动调用上传，有文件选择即开始上传。
  
   
  @method addFiles
  @grammar addFiles( file ) => undefined
  @grammar addFiles( [file1, file2 ...] ) => undefined
  @param {Array of File or File} [files] Files 对象 数组
  @description 添加文件到队列
  @for  Uploader