Use google map api for geocoding in production
user
```ruby
if Rails.env.production?
  Geocoder.configure(
    # Geocoding options
    # timeout: 3,                 # geocoding service timeout (secs)
    lookup: :google,         # name of geocoding service (symbol)
    # ip_lookup: :ipinfo_io,      # name of IP address geocoding service (symbol)
    # language: :en,              # ISO-639 language code
    use_https: true,           # use HTTPS for lookup requests? (if supported)
    # http_proxy: nil,            # HTTP proxy server (user:pass@host:port)
    # https_proxy: nil,           # HTTPS proxy server (user:pass@host:port)
    api_key: ENV['GOOGLE_MAPS_API_KEY']               # API key for geocoding service
    # cache: nil,                 # cache object (must respond to #[], #[]=, and #del)
    # cache_prefix: 'geocoder:',  # prefix (string) to use for all cache keys

    # Exceptions that should not be rescued by default
    # (if you want to implement custom error handling);
    # supports SocketError and Timeout::Error
    # always_raise: [],

    # Calculation options
    # units: :mi,                 # :km for kilometers or :mi for miles
    # distances: :linear          # :spherical or :linear
  )
end```
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