code: function(from, to, callback) {
    fse.copy(from, to, function (err) {
      if (err) {
        callback(err);
      } else {
        callback(null);
      }
    });
  }
docs: Copies a file/dir
  
  @param {String} from From path
  @param {String} to To path
  @param {Function} callback Callback