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potionfactory / potionstore

http://www.potionfactory.com/potionstore
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Update lib/ruby-paypal/credit_card_checks.rb #6

Closed klalex closed 11 years ago

klalex commented 11 years ago

On http://en.wikipedia.org/wiki/Credit_card_number you can see that MasterCard can start from 51 to 55. Updated validations rule.