Ah the fix was simple: bin/rev run github.com/...
But now it fails with an error that I don't really know how to fix as a Go noob ...
Go Compilation Error (in /usr/local/Cellar/go/1.0.2/src/pkg/github.com/robfig/revel/samples/booking/app/controllers/db.go:6): import "github.com/mattn/go-sqlite3": cannot find package