Update README.md

Author: aliwaqas333

README.md

@@ -9,8 +9,8 @@ This project was bootstrapped with [Create React App](https://github.com/faceboo
 ## Usage
 
 In the project directory, you can run:
-- `npm install`
-- `yarn start`
+1. `yarn`
+2. `yarn start`
 
 Runs the app in the development mode.<br />
 Open [http://localhost:3000](http://localhost:3000) to view it in the browser.