http://krasimirtsonev.com/blog/article/The-bare-minimum-to-work-with-React?utm_campaign=React%2BNewsletter&utm_medium=email&utm_source=React_Newsletter_34

package.json

{
  "name": "react-app",
  "version": "1.0.0",
  "description": "react application",
  "scripts": {
    "build": "browserify ./src/app.jsx -o ./public/app.js -t babelify",
    "watch": "watchify ./src/app.jsx -o ./public/app.js -t babelify -v"
  },
  "dependencies": {
    "babel-preset-es2015": "6.9.0",
    "babel-preset-react": "6.5.0",
    "babelify": "7.3.0",
    "browserify": "13.0.1",
    "react": "15.1.0",
    "react-dom": "15.1.0",
    "watchify": "3.7.0"
  }
}