give the possibility to have a default position

[epitre]

Something like this should work :

            var lp = new locationPicker('map', {
                dfLat: 0,
                dfLng: 0,
                setCurrentPosition: true
            }, {
                // Google Maps Options
                zoom: 15,
            });

should show "null island" a point in the atlantic, close to africa, if you refuse to share your location.

WARNING !

Could you test it first, please.

[epitre]

closes #7