new create react app

RUN IN CMD

npm install -g create-react-appnpx create-react-app my-app
cd my-app
npm startnpx create-react-app my-app
cd my-app
npm start
//Note:npx on the first line is not a typo — 
//it’s a package runner tool that comes with npm 5.2+.npx --ignore-existing create-react-app .npx create-react-app my-appcd my-appnpm startCopy