explicit requirements
explicit requirements

Explicit requirements in composer.json instead of relying on README informations.
Mangopay/mangopay2-php-sdk,andufratu/mangopay2-php-sdk,Mangopay/mangopay2-php-sdk,aslafy-z/mangopay2-php-sdk,aslafy-z/mangopay2-php-sdk,andufratu/mangopay2-php-sdk