Convert ISO-3166 Country alpha-2 to full name

ISO-3166.rb

#Thanks for https://github.com/lukes/ISO-3166-Countries-with-Regional-Codes
require 'json'
require 'rest-client'

TEST_LIST = "AT, BE, BG, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HU, IE, IT, LT, LU, LV, MT, NL, PL, PT, RO, SE, SI, SK, US".split(", ")
JSON_URL = 'https://github.com/lukes/ISO-3166-Countries-with-Regional-Codes/raw/master/slim-2/slim-2.json'

response = RestClient.get(JSON_URL)
json = JSON.parse(response)
puts json.select { |j| TEST_LIST.include?(j["alpha-2"]) }.map { |j|  j["name"]}.join("\n")

=begin
OUTPUT:

Austria
Belgium
Bulgaria
Cyprus
Czech Republic
Denmark
Estonia
Finland
France
Germany
Greece
Hungary
Ireland
Italy
Latvia
Lithuania
Luxembourg
Malta
Netherlands
Poland
Portugal
Romania
Slovakia
Slovenia
Spain
Sweden
United Kingdom of Great Britain and Northern Ireland
United States of America
=end