Add TimedGeocoder

Hey folks!

I needed this for my application. Maybe someone need this too.
I integrated the `symfony/stopwatch` component into this library. 

Now you can easily profile your API calls and see how expensive it is.
I'm not a big fan of the suggest section. The output is not really user
friendly. But if you find it useful I will add it.
Am 03.11.2014 22:43 schrieb "Christian Flothmann" <notifications@github.com
>:

> In composer.json:
>
> > @@ -17,7 +17,8 @@
> >          "igorw/get-in": "~1.0"
> >      },
> >      "require-dev": {
> > -        "geoip2/geoip2": "~0.6"
> > +        "geoip2/geoip2": "~0.6",
> > +        "symfony/stopwatch": "~2.5"
>
> What do you think about adding it also to the suggest section and mention
> that this is needed to be able to use the TimedGeocoder?
>
> —
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> <https://github.com/geocoder-php/Geocoder/pull/360/files#r19768556>.
>