code: function(dir) {
      var dirParts = dir.split(path.sep);
      var nodeModules = dirParts.indexOf('node_modules');
      return path.join(dirParts[nodeModules], dirParts[nodeModules + 1], '**');
    }
docs: Keep just the first occurence of `node_modules` and the directory name next to it, and append `**`
  e.g. /home/user/work/fh-ngui/node_modules/watchify/node_modules/assert will be formatted  to node_modules/watchify/**