Adding cookie route. Going to open PR for comments.

Creating a cookie route that will route you according to cookies you have set or that you don't have set.

I was inspired by the approach taken in www.yiibu.com

To understand you might have to delete the cookies this site sets several times.

They route you to a 'setup' page if you don't have a certain cookie. Otherwise, they let you pass on through to the normal page you want.