Use gitbook-parsers or gitbook-markdown

[SamyPesse]

Awesome plugin 👍

Why not use https://github.com/GitbookIO/gitbook-parsers or https://github.com/GitbookIO/gitbook-markdown for parsing SUMMARY.md?

[cthos]

Thanks! 🎉

For the parser, I only just discovered you'd made that package a few weeks ago, but I didn't want to implement it until #29 was finished so I could be sure I didn't break anything.

It's definitely on the todo list, and this issue will serve as the action item.