Fix usage of Mage::helper method.
Fix PEAR SOAP verification.
Rename 'Mage::ThrowError' to 'Mage::throwException'.
Fix class names to be consistent with Magento naming convention.
Use UTC datetime for the stored credit cards.
Do not save credit card if multi token has not been generated.
Merge pull request #15 from sergeykalenyuk/fixes

Fixes