Convention For Hack-SpaceVim
- Pictures will be hosting on [Gist-Hack-SpaceVim](https://gist.github.com/b71a01cce86df216abd4fd0968864942) instead of [Hack-SpaceVim](https://github.com/Gabirel/Hack-SpaceVim)
- Fixed spell: `SpaceVim`
- DO NOT ADD `/` before folder when using relative path in TOC. 
    * correct: `installation/installation-for-windows.md` ✅
    * wrong: `/installation/installation-for-windows.md` ❌
- Markdown Lint Rule: [Rules.md](https://github.com/DavidAnson/markdownlint/blob/master/doc/Rules.md)
- The first word of English title should be capitalized.
- Use [`Asciidoc`](https://asciidoc.org/) to avoid wasting time to update TOC.
- Hack-SpaceVim is where the knowledge aggregation belongs, originating from GitHub issue and GitHub discussion.