Print version tests

Hey there,

I noticed a error in tests: for example, I've tested one of my website: http://www.ecometer.org/report?url=https%3A%2F%2Fvan11y.net%2F

And eocometer says I don't have a print version (I suppose that it detects dedicated printing stylesheets). However, I have one using @media print. It could be nice to include the presence of it in your tests.

Cheers, Nicolas