Mention CI in README

Author: samchamberland

README.md

@@ -22,8 +22,9 @@ npx https://github.com/AppAndFlow/create-expo-app <app-name>
 - Prettier
 - Jest
 - React Navigation
-- Preloading & caching of local assets on app startup
-- Environment variables script
 - react-native-testing-library
 - react-native-kondo
-- A minimal project structure
+- Preloading & caching of local assets on app startup
+- Environment variables script
+- CI workflow (via GitHub Actions) to lint, typecheck & test
+- Minimal project structure