Welcome to the JTL Shopware 5 Connector
If you don't have Composer yet, download it following the instructions on http://getcomposer.org/ or just run the following command:
curl -s http://getcomposer.org/installer | php
Guide: http://guide.jtl-software.de/jtl/Kategorie:JTL-Connector#JTL-Connector
Class documentation: http://docs.jtl-software.de
Developer documentation: http://docs.jtl-connector.de