*What _is_ JSX?* https://www.fullstackreact.com/30-days-of-react/day-2/
*Diving Into Webpack:* https://web-design-weekly.com/2014/09/24/diving-webpack/
*What is registerServiceWorker?* https://developer.mozilla.org/en-US/docs/Web/API/Service_Worker_API
*What is Babel?* https://babeljs.io/docs/en/6.26.3/
*Why I Love create-react-app:* https://medium.com/@tuchk4/why-i-love-create-react-app-e63b1be689a3
*React's Virtual DOM:* https://www.codecademy.com/articles/react-virtual-dom