mikeal/request — pull request #105 by dominictarr (2011-11-17 00:35:32+00:00)
Title: added test for proxy option.

using

``` js
request({
url: 'http://'+X,
proxy: 'http://'+Y
}, function () {...})
```

should be equivalent to :

``` js
request({
url: 'http://'+Y,
headers: {host: X}
}, function () {...})
```