README.md in maxminddb-geolite2-city-1.2.0 vs README.md in maxminddb-geolite2-city-1.3.0

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 # Maxminddb::Geolite2::City
 
 This gem bundles the GeoLite2-City.mmdb database along with the [MaxMinDB gem](https://github.com/yhirose/maxminddb).
 This way you don't need to manage the DB version yourself.
 