Refactored to support reloading without triggering multiple tickers
Add override_country_code to support development
Add env vars for GEOIP_ACCOUNT_ID and GEOIP_API_KEY
Support skipping GeoIP look up if the database has not been loaded. This helps with the chicken and egg start up issues, where the database has not been loaded but requests are being served (health checks potentially). The Country Code returned is --
Renamed the variables from geoip_country_code to geoip.country_code
Initial release