code: function(files) {
  		var regex;
  		if (options.webroot instanceof RegExp) {
  			regex = options.webroot;
  		} else {
  			regex = new RegExp('^' + options.webroot);
  		}
  		_.each(files, function (value, key) {
  			files[key] = value.replace(regex, '');
  		});
  		return files;
  	}
docs: Strip server path from from file path so
  that the file path is relative to the webroot
  
  @param  array files
  @return array files clean filenames