Update README.md (#283)
Update README.md (#283)

Included working examples for ignoring Pokémon and making the sever externally visible (IPv4 and IPv6).

Both was frequently asked for on reddit.
creatingwake/PokemonGo-Map,creatingwake/PokemonGo-Map,creatingwake/PokemonGo-Map,creatingwake/PokemonGo-Map