Support For Graceful Shutdown

[aryanmehrotra]

Application should wait before all the goroutines are completed before shutting down application

[ccoVeille]

I second that, but I would say the app should wait a short delay and not forever. Something like 5s-1m depending on the app. So it could be an app parameter

[vikash]

Agreed. 5 second is a respectable default - with an option to override it, if user so wishes.