Updated the encrypted buttons' doc page.
Updated the encrypted buttons' doc page.

spookylukey/django-paypal,spookylukey/django-paypal,rsalmaso/django-paypal,rsalmaso/django-paypal,rsalmaso/django-paypal,GamesDoneQuick/django-paypal,GamesDoneQuick/django-paypal,spookylukey/django-paypal