_shouldProcess(path) {
    path = path.replace(/\/$/, '');
    if (!fs.existsSync(path)) {
      console.warn('Path ' + path + ' was not found.');
      return false;
    }

    path = path.replace(/^\.\//, '');
    return this.exclude.every(function(e) {
      return !e.match(path);
    });
  }
Checks if path is not present in `exclude` list.

@param {String} path
@returns {Boolean} False if specified path is present in `exclude` list.
Otherwise returns true.