Add electron to webapp including dev setup

web/README.md

@@ -13,6 +13,8 @@ You can find the most recent version of this guide [here](https://github.com/fac
   - [npm test](#npm-test)
   - [npm run build](#npm-run-build)
   - [npm run eject](#npm-run-eject)
+  - [npm run electron](#npm-run-electron)
+  - [npm run electron-dev](#npm-run-electron-dev)
 - [Supported Browsers](#supported-browsers)
 - [Supported Language Features and Polyfills](#supported-language-features-and-polyfills)
 - [Syntax Highlighting in the Editor](#syntax-highlighting-in-the-editor)
@@ -198,6 +200,14 @@ Instead, it will copy all the configuration files and the transitive dependencie
 
 You don’t have to ever use `eject`. The curated feature set is suitable for small and middle deployments, and you shouldn’t feel obligated to use this feature. However we understand that this tool wouldn’t be useful if you couldn’t customize it when you are ready for it.
 
+### `npm run electron`
+
+Make sure to run `npm run build` so the production build will be loaded in electron.
+
+### `npm run electron-dev`
+
+Make sure to first start the react-dev server using `npm start`. Then invoke `npm run electron-dev` to start the electron app.
+
 ## Supported Browsers
 
 By default, the generated project uses the latest version of React.