app/src/main/res/values/credits.xml
<?xml version="1.0" encoding="utf-8"?>
<resources>
<string name="icons_author_website">https://dribbble.com/msenyil</string>
<string name="icons_author_name">Muharrem Şenyıl</string>
<string name="icons_website">https://www.iconfinder.com/iconsets/195-flat-flag-psd-icons</string>
<string name="icons_licence">https://creativecommons.org/licenses/by/3.0/</string>
</resources>