code: function normalizePath(href, _root, _from) {
  	/* istanbul ignore next */
  	return href ? path.join(path.isAbsolute(href) ? _root : path.dirname(_from), href) : _from;
  }
docs: [normalizePath description]
  @param  {String} href  [path to the file]
  @param  {String} _root [context]
  @param  {String} _from [relative file]
  @return {String}       [absolute path to file]