why IRoutingService not under NDDDSample.Application

```
It seemed that IRoutingService should be under NDDDSample.Application (like 
IBookingService, ICargoInspectionService, etc) instead of under 
NDDDSample.Domain.  Thanks.

```

Original issue reported on code.google.com by `peterhnt...@gmail.com` on 8 May 2014 at 11:55
