Convert my address book into Geohash to display data in Kibana Tile Map Visualization

[Olalekan_Elesin]

@vikas_gopal

http://geolite.maxmind.com/download/

I would love to do something similar. I have a City field in my elasticsearch documents and I would love to generate lat and lon from the city field so I can view in Kibana. How is this possible?

Sample document:
{ "name" : "Lekan", "city" : "Abeokuta" }