msg-pack-plugin for Hapi v18

• npm install msg-pack-plugin --save

• Plugin registration:

      server.register(require('msg-pack-plugin'));

• To validate using the example in the source you could use curl (this assumes you have msgpack2json installed):

      curl --header "accept: application/x-msgpack" 'http://localhost:3000/api/user' | msgpack2json -d