create create app from a repo code example

Example 1: Create React App command

npx create-react-app hello-world
cd hello-world && npm start

Example 2: yarn react install

There are two ways where you can initiate a REACT app.. 
1. Using npm : npm init react-app <app_name>
	 example : npm init react-app sampleApp
2. Using yarn : yarn create react-app <app_name>
	 example : yarn create react-app sampleApp