Fix a problem about url when occur redirection

I found a problem that location.href is not changed when occur redirection.
request supports following redirect as far as I know.
The result of some tests, redirected url is returned in callback function of request. (in my code, request.request.uri.href. exactly, response.request.uri.href)
But redirected url is not applied to window object. (window.location.href)

I tested original code some cases, and created test web page. (http://fegs.kr:10101)
Here is test code.

```javascript
var jsdom = require("jsdom");
jsdom.env({
  html: "http://fegs.kr:10101",
  done: function(errors, window) {
    console.log(window.document.body.innerHTML);
    console.log(window.location);
  }
});
```

Expected :
> Redirect Test
>
{ protocol: 'http:',
  slashes: true,
  host: 'fegs.kr:10101',
  port: '10101',
  hostname: 'fegs.kr',
  href: 'http://fegs.kr:10101/redir',
  pathname: '/redir',
  path: '/redir',
  reload: [Function],
  replace: [Function],
  toString: [Function],
  hash: [Getter/Setter],
  search: [Getter/Setter] }

Actual :  
> Redirect Test
>
{ protocol: 'http:',
  slashes: true,
  host: 'fegs.kr:10101',
  port: '10101',
  hostname: 'fegs.kr',
  href: 'http://fegs.kr:10101/',
  pathname: '/',
  path: '/',
  reload: [Function],
  replace: [Function],
  toString: [Function],
  hash: [Getter/Setter],
  search: [Getter/Setter] }

You can test using my page.
and modified code works expected.
+ Test was passed.