Check out `plone.recipe.varnish` saint-mode

@cleder added saint-mode support to plone.recipe.varnish:

Could people who know their way around varnish using this recipe in production give this branch a try?
We'd like it to be tested a bit more before merging.

You could add tests which build and fire requests at varnish since you're already using travis.

@djay the branch has travis tests and has already been merged :wink: