시작하기 전 설치할 것 들 - node, watchman,cocoapods, java brew install node brew install watchman sudo gem install cocoapods brew tap AdoptOpenJDK/openjdk brew cask install adoptopenjdk8 - Xcode 설치 프로젝트 생성 npx react-native init AwesomeProject 실행 npx react-native run-ios
