Fix match for adding spree routes mount line on install
Rails no longer generates a public/index.html file
Let spree:install take care of routes in test_app

Interesting looks like routes.rb get back to a previous approach in
4.1.0.beta1
object.touch no longer causes parent objects touch

Needs more investigations. Something between 4.1.0.beta1 and current
rails edge changed this behaviour. Not sure if it's intentional or some
bug