enhance delay support to include all routes
enhance delay support to include all routes

In addition to `/delay/{x}` where `x` is a number, the `delay` route now
additionally supports:
- `/delay/{n}-{m}` support for a random delay between n-m seconds

Any of the delay types can be applied to all routes using the following route:
- `/delay/{delayType}/{route}` support for a delay for any route

davglass/echoecho