Dépendances:

/*
- mosca -> MQTT
    https://github.com/mcollina/mosca
    npm install mosca --save
*/

/*
- minimist -> to pass command line arguments to a Node.js program
    https://stackoverflow.com/questions/4351521/how-do-i-pass-command-line-arguments-to-a-node-js-program
    https://www.npmjs.com/package/minimist
    npm install minimist
*/

- vis.js -> a dynamic, browser based visualization library
    https://visjs.org/
    https://www.npmjs.com/package/vis-network
    npm install vis-network

- Native Bootstrap -> Bootstrap is the most popular HTML, CSS, and JS framework for developing responsive, mobile first projects on the web -> sans jQuery
    http://thednp.github.io/bootstrap.native/
    https://github.com/thednp/bootstrap.native/wiki/How-to-use
    npm install --save bootstrap.native

- ProvJS -> JavaScript PROV library
    https://bitbucket.org/provenance/provjs/src/master/
    télécharger le fichier ProvJS/provenance-provjs-2d5b9798e771.zip

/*
Utilisation:
- broker : node brokerxxx.js
- client : node clientxxx.js [--in=<topicIn>] [--out=<topicOut>]
- publish: node ./node_modules/mqtt/mqtt publish <topic> [message]
*/

MQTT: Pour tester un envoi sur un topic depuis un terminal:
    - dans ./node_modules/.bin (ou MQTT.js est installé)
    - ./mqtt pub -t 'testMM' -h 'test.mosquitto.org' -m 'from MQTT.js'