Add demonym for Antarctica
Merge pull request #84 from thachhoang/master

Add demonym for Antarctica
Add portuguese country name translations
Merge pull request #89 from ricardograca/master

Add portuguese country name translations
Fix afghanistan portuguese translation
Merge pull request #90 from ricardograca/master

Fix afghanistan portuguese translation
add composer.json to make this repository available on packagist
Add dependency on "symfony/yaml" component
Add YamlConverter class

Outputs to `dist/countries.yml`