Autodetect org-mode/markdown

When you create the graph from an existing folder with notes, it’s pretty clear how to tell which one the user wants to use. E.g. if 50% of files have .org extension, they probably want org-mode instead of markdown :slight_smile: Would it make sense to set by default?

Hey @karlicoss :wink: !
Totally agree with you :+1:

This is not true when you want to switch to another format.