Backstop 설치 Backstop 실행 스크립트 추가 "backstop:init": "backstop init --config=backstop.config.js", "backstop:test": "backstop test --config=backstop.config.js", "backstop:reference": "backstop reference --config=backstop.config.js", "backstop:approve": "backstop approve --config=backstop.config.js", "backstop:openReport": "backstop openReport --config=backstop.config.js" init backstop 초기 설정을 해 줌 (bac..