请参考：

• https://github.com/barryclark/jekyll-now
• https://raw.githubusercontent.com/barryclark/www.jekyllnow.com/gh-pages/_posts/2014-6-19-Markdown-Style-Guide.md
• https://www.smashingmagazine.com/2014/08/build-blog-jekyll-github-pages/

1. Code blocks in ordered list may reset the order number

   First in vim:

    set tabstop=2
    set shiftwidth=4
    set expandtab
   

   Then, in vim visual mode, shift right 4 spaces of the ```block