Go Kit example

This repo exists just to play with go-kit, to get a better understanding of what it can offer.

First commit contains the most basic example ever that you can build.
Second commit have additional logging middlewares and corrects some errors from the previous example
Third commit added instrumentation / metrics

A "review"

The whole idea is:

stuff is modular and pluggable
we wire things in the main of the application. This includes logging, instrumentation and definition of routes
we create one handler per route. The handlers are initialized with the NewServer function
All the logic is cleanly separated in service.go. This means it's easy to rewrite the rest.
Being mostly interested in the HTTP part, having logic on error code in transport.go sounds a bit weird.
The middleware are tied to the interface they are wrapping. This means that it is probably better to have only one interface for all the operations of our microservice.