Add new POI: betting/gambling shops

[tommorris]

I've been using Pushpin for a while and it lets me add most things I find in central London to the map. One thing I've found repeatedly to have a problem with is adding bookmakers—betting shops. These are shops where you can go in and gamble on sporting events like horse racing and soccer.

OSM has a tag for such places - shop=bookmaker. Adding "Bookmaker / betting shop" to the type list would make it a lot easier for me to map the United Kingdom.