bundle install
bundle exec jekyll serve
git add .
git commit -m "commit message"
git push
[참조]
https://zeddios.tistory.com/1222
https://zeddios.tistory.com/1223
https://ogaeng.com/jekyll-blog-install/
https://velog.io/@zawook/Github-%EB%B8%94%EB%A1%9C%EA%B7%B8-%EB%A7%8C%EB%93%A4%EA%B8%B0-2
https://velog.io/@minji-o-j/jekyll-%EC%98%A4%EB%A5%98-%ED%95%B4%EA%B2%B0