Dump from i18n with redis backend to yaml

i18n-redis-dump.rb

locales = I18n.available_locales.map(&:to_s)
keys = TRANSLATION_STORE.keys
keys = keys.select{|x| locales.include?(x.split('.',2)[0]) }

translations = keys.inject({}) do |memo, key|
  memo[key] = TRANSLATION_STORE.get(key)
  memo
end

File.open('translations.yml', 'w') do |f|
  f.write translations.to_yaml
end