Commerce PayU

PayU integration for the Drupal Commerce payment and checkout system.
This version works only with Payu/platnosci.pl (available at www.payu.pl).
Im planning to create a new version module that would be compatible with both: old API: PayU (old name: platnosci.pl) and new API: PayU, but I'm quite busy at the moment so it may take a while until I will start developing it.