Station ID lookup

```
You mention in the readme that to lookup a station id we should
"Other way to get the station ID: use this library: 
http://code.google.com/p/python-weather/ and Weather.location2station function."

That code is now broken because Google has removed the old geo API it was based 
on.
```

Original issue reported on code.google.com by `danga...@gmail.com` on 13 Sep 2013 at 9:52
