How to use vanity urls in Pardot if your site is behind an SSL

If you have a secure site then you know it's tough to use Pardot Vanity urls.

Our development team has found a solution and I thought it might be useful to someone else.

Here is the link explaining how we did it: http://letzgro.net/blog/pardot-salesforce-marketing-automation-solution-how-to-ssl-enable-http-secure-urls/

I hope someone finds this as useful as we did.