unexpected keyword argument 'id'

Hi!

I'm trying to use your python script to delete old favs. I get the following error:

```
TypeError: DestroyFavorite() got an unexpected keyword argument 'id'
```

Apparently `bear/python-twitter` changed some keyword arguments, so now we need to use _**status_id**_ instead of **_id_**.

https://github.com/bear/python-twitter/pull/314

Thanks!!!