timrwood/moment — pull request #495 by aleafs (2012-11-03 08:34:37+00:00)
Title: fix bug to get week number of year

#492 , #493

Sometimes, codes below got error result:

```javascript
moment().format('w')
```

test cases from here:
[http://en.wikipedia.org/wiki/ISO_week_date](http://en.wikipedia.org/wiki/ISO_week_date)