Update README.md with express info

projectSecondPart/README.md

@@ -13,7 +13,7 @@ This project was bootstrapped with [Create React App](https://github.com/faceboo
 
 In the project directory, you can run:
 
-### `npm start`
+### `npm run start`
 
 Runs the app in the development mode.\
 Open [http://localhost:3000](http://localhost:3000) to view it in the browser.
@@ -21,6 +21,14 @@ Open [http://localhost:3000](http://localhost:3000) to view it in the browser.
 The page will reload if you make edits.\
 You will also see any lint errors in the console.
 
+### `npm run start-express`
+Runs the express server that serves the app
+Send GET requests to [http://localhost:3001](http://localhost:3001) to request content maually. 
+Examples:
+ - [http://localhost:3001/user/list](http://localhost:3001/user/list)
+ - [http://localhost:3001/test/info](http://localhost:3001/test/info)
+
+
 ## Learn More
 
 You can learn more in the [Create React App documentation](https://facebook.github.io/create-react-app/docs/getting-started).