Sane Defaults for GrumPHP

Instructions for use

composer require --dev ergebnis/composer-normalize friendsofphp/php-cs-fixer \
jakub-onderka/php-parallel-lint maglnet/composer-require-checker phpmd/phpmd \
phpro/grumphp phpstan/phpstan phpunit/phpunit roave/security-advisories \
sensiolabs/security-checker sebastian/phpcpd

curl https://raw.githubusercontent.com/sane-defaults/phpcs/master/.php_cs > .php_cs
curl https://raw.githubusercontent.com/sane-defaults/grumphp/master/grumphp.yml > grumphp.yml