Add UN Regional Groups to every country entry

Author: Tade Strehk

README.md

@@ -32,6 +32,7 @@ Each line contains the country:
  - ISO 3166-1 independence status (`independent`) (denotes the country is considered a sovereign state)
  - ISO 3166-1 assignment status (`status`)
  - UN Member status (`unMember`)
+ - [UN Regional Group](https://en.wikipedia.org/wiki/United_Nations_Regional_Groups) (`unRegion`)
  - `currencies` - list of all currencies
  	- key: ISO 4217 currency code
  	- value: currency object
@@ -90,6 +91,7 @@ GeoJSON outlines and flags in SVG format.
 	"independent": true,
 	"status": "officially-assigned",
 	"unMember": true,
+	"unRegionalGroup": "Western European and Others Group",
 	"currencies": {"EUR": {"name": "Euro", "symbol": "\u20ac"}},
 	"idd": {
 		"root": "+4",