Add remote or operation hook example

[jakerella]

This is also one of those things that we used to have, I think it was in the Review model to fake and email to the coffee shop when they got a new review.

[Sequoia]

I will do this today if time allows.

[Sequoia]

started to do this based on https://github.com/strongloop-training/coffee-time/blob/master-backup/common/models/review.js but I don't know where you want it in the order. Occurred to me it should be on the tip, after the client is added (it's difficult to create reviews between steps add ACLs and add frontend because you can't post reviews w/o auth).

I'm going to have to leave this one to you but please do let me know if you have any difficulty adding it in.