Klarna integration guide

We have now released the new osCommerce module. The changes are the following:

- Changed logos to Klarna
- Changed all texts to Klarna and we have also rewritten how part payments are shown in the checkout.
- Put together the two swedish account modules to work as one, and added the account part to the finnish part payment module.
- Changed the minimum amount to pay to 50 kr/month and 8,95 €/month.

The new module can be downloaded from here.