This is Namesilo module for Fossbilling hosting automation and domain registrar
For setup upload Namesilo.php to your Fossbilling installation in folder library/Registrar/Adapter
After that go to your admin System -> Domain Registartion ( link admin/servicedomain ) New Domain Registrar tab and install Namesilo.
For additional info about Namesilo API setup click on:
https://www.namesilo.com/reseller/boxbilling