Don't default to Rails 3.2.0
Don't default to Rails 3.2.0

We're no longer targeting Rails versions in the 3.2.x line.

substancelab/route_downcaser,carstengehling/route_downcaser,carstengehling/route_downcaser,substancelab/route_downcaser,carstengehling/route_downcaser,substancelab/route_downcaser