Rebuilding "A first project" tutorial

[anthumchris]

I struggled with following the tutorial "A first project", because there is no npm task to build the project after modifying source files. Could be helpful if build/watch tasks were added to package.json with usage instructions:

"scripts": {
  "test": "node --napi-modules ./test/test_binding.js",
  "build": "...",
  "build-watch": "..."
},

[anthumchris]

I'm using a dev script to rebuild/retest on changes:

$ npm view entr-bin description
A thin Node.js wrapper around Eric Radman's entr (http://entrproject.org),
a cross-platform file-watcher that runs on Linux, OS X and BSD.

$ npm view npm-run-all description 
A CLI tool to run multiple npm-scripts in parallel or sequential.

$ npm install --save-dev entr-bin npm-run-all

"scripts": {
  "build": "node-gyp build",
  "build:watch": "ls src/* | entr npm run build",
  "dev": "npm-run-all rebuild --parallel build:watch test:watch",
  "rebuild": "node-gyp rebuild",
  "test": "node ./test/test_binding.js",
  "test:watch": "find lib test build/Release -type f | entr npm run test"
},

npm run --silent dev    # watch files and rebuild/retest