Add a Markdown viewer/editor

Hello,

Could you add a Markdown viewer :slight_smile: please :slight_smile:

Very useful when there is a README.md file at the root of the project

Thank you
nice day

Hi @JoseFR,
I was just wondering if you knew that Pinegrow plays really well with Atom and VSC - both of which have markdown and a terminal.
Cheers,
Bob