Add FreeGeoIP provider

[DenisCarriere]

http://freegeoip.net

[DenisCarriere]

Added FreeGeoIP provider

$ geocode '99.240.181.199' --provider freegeoip --pretty --geojson
{
    "geometry": {
        "type": "Point", 
        "coordinates": [
            -75.691, 
            45.413
        ]
    }, 
    "type": "Feature", 
    "properties": {
        "status": "OK", 
        "city": "Ottawa", 
        "ip": "99.240.181.199", 
        "address": "Ottawa, Ontario Canada", 
        "provider": "freegeoip", 
        "time_zone": "America/Toronto", 
        "state": "Ontario", 
        "location": "99.240.181.199", 
        "country": "Canada", 
        "postal": "K2P"
    }
}