Additional (optional) company fields in invoice

[zaibacu]

For our use case, Company Code and bank IBAN is required. Since company info is taken from hash instead of array, added these two additional fields

[excid3]

You can create a class that inherits from Invoice and adds this functionality without having to modify the gem.

[zaibacu]

Yes, I have no problem extending it. Just assumed this is quite common requirement for invoice 🙂

[excid3]

I think we can extract a company_details feature to make this customizable through initialize as well so you don't have to override and it would be more flexible.

I can probably put together a PR for that today.