Feature Request: Flag to strip <!-- toc --> from output

[Ratstail91]

I'm using markdown-toc with markdown-it, and currently markdown-it doesn't support HTML style comments. So, at least when using this from the command line, is there a way to surpress the and in the output file when using the -i tag?

I figure your project is easier to change, since markdown-it is nothing but regexes.

[Ratstail91]

Oops githib's markdown stripped these, but i meant to type these:

<!-- toc -->
<!-- tocend -->