bring back extend

Author: Ilya Radchenko

lib/output/html.js

@@ -2,6 +2,7 @@
 
 var File = require('vinyl'),
   vfs = require('vinyl-fs'),
+  extend = require('extend'),
   concat = require('concat-stream'),
   Handlebars = require('handlebars'),
   walk = require('../walk'),
@@ -39,15 +40,16 @@ function highlight(comment) {
  * Formats documentation as HTML.
  *
  * @param {Array<Object>} comments parsed comments
- * @param {Object} options Options that can customize the output
- * @param {string} [options.theme] Name of a module used for an HTML theme.
+ * @param {Object} opts Options that can customize the output
+ * @param {string} [opts.theme] Name of a module used for an HTML theme.
  * @param {Function} callback called with array of results as vinyl-fs objects
  * @returns {undefined} calls callback
  * @name html
  */
-module.exports = function makeHTML(comments, options, callback) {
+module.exports = function makeHTML(comments, opts, callback) {
   comments = walk(comments, highlight);
 
+  var options = extend({}, opts);
   var themeModule = resolveTheme(options.theme);
   var pageTemplate = getTemplate(Handlebars, themeModule, 'index.hbs');