code: function _getFileName(filePath, ext=settings.get('extensions')) {
    return path.basename(filePath).replace(_getExtensionRegEx(ext), '');
  }
docs: Take a file path and return the filename (without an extension).  Possible
  extensions are passed in or the module default is used.
  
  @private
  @param {string} filePath                               File path to get filename from.
  @param {Array|string} [ext=config.get('extensions')]   File extension(s) to remove.
  @returns {string}                                      The filename without given extension(s).