Update environment setup

environment setup

@@ -5,4 +5,6 @@ step :2 curl -sL https://deb.nodesource.com/setup_6.x | sudo -E bash -     // so
 step :3 sudo apt-get install -y nodejs  // installation of node js
 step :4 node -v                                    // To check the version for node js
 step :5 sudo apt install npm                // installation of node package maanager
-step :6  npm -v                                    // To check the version for npm
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+step :6  npm -v                                    // To check the version for npm
+step :7npm install -g react-native-cli     //install react native
+react-native init AwesomeProject        //create a react app
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