Flag images taken from http://www.famfamfam.com/lab/icons/flags/, according to license:
  
   “Flags” are 247 icons — in GIF and PNG formats — representing most countries in the world as small pixel icons.
   These flag icons are available for free use for any purpose with no requirement for attribution.
   
Country data is pulled from
 http://ws.geonames.org/countryInfoJSON?formatted=true
under creative commons attribution license