init readme with generate plugin url
init readme with generate plugin url

Haehnchen/idea-php-shopware-plugin,Haehnchen/idea-php-shopware-plugin,Haehnchen/idea-php-shopware-plugin,Haehnchen/idea-php-shopware-plugin,ShopwareHackathon/idea-php-shopware-plugin,ShopwareHackathon/idea-php-shopware-plugin,Haehnchen/idea-php-shopware-plugin