code: function findIgnoreFile(cwd) {
      cwd = cwd || DEFAULT_OPTIONS.cwd;
  
      var ignoreFilePath = path.resolve(cwd, BEMLINT_IGNORE_FILENAME);
      return fs.existsSync(ignoreFilePath) ? ignoreFilePath : "";
  }
docs: ------------------------------------------------------------------------------ Helpers ------------------------------------------------------------------------------ 
  Find an ignore file in the current directory.
  @param {stirng} cwd Current working directory
  @returns {string} Path of ignore file or an empty string.