- https://reactjs.org/tutorial/tutorial.html
- https://siakhooi.github.io/reactjs-tutorial-tic-tac-toe/
- https://coveralls.io/github/siakhooi/reactjs-tutorial-tic-tac-toe
npx create-react-app reactjs-tutorial-tic-tac-toe
cd reactjs-tutorial-tic-tac-toe
cd src
rm -f * # del * (windows)
cd ..
npm install --save-dev gh-pages react-test-renderer