bretcope/odyssey — pull request #3 by rossipedia (2014-07-11 17:30:48+00:00)
Title: allow calling httpLog with IncomingMessage obtained from HttpClient

Simple addition to allow constructing an `HttpLog` from the response from a http request.

Sample usage:

```javascript
request('http://some-url', function (err, response, body)
{
var hlog = httpLog(err);
if (hlog.failed) { ... }

hlog = httpLog(response);
if (hlog.failed) { ... }

// all good
});
```