symfony/symfony-docs — pull request #2054 by Sgoettschkes (2012-12-20 15:36:34+00:00)
Title: Adding documentation for the CardScheme validation.

As mentioned in #2023, I documented the CardScheme using the Luhn Validation as a template.

I also added a link to wikipedia, which I am not sure about. Please have a look and tell me what you think.