Import bunch of markdown files

[fdschneider]

First of all, Laverna looks and feels great. The concept totally convinced me. Thanks a lot!

To be able to migrate I would need to import a bunch of markdown files at once from my former current notebook (a website build with Jekyll). A couple of other applications and wikis (e.g. gollum) use separate markdown files. Maybe an upload option for raw markdown files would be possible.

I see that there are difficulties for batch processing, as for example how to get the metadata (date etc.) for the markdown files right. At least Jekyll posts come with a filename of the format "YYYY-MM-DD-name-of-post.md".
Maybe someone has an idea for a script that batch processes the single files into a valid .zip file for import?

(Also see issue #398)