Import images withe de markdown file

In my opinion, markdown file should be independent itself. So I don’t like yaml header in jekyll, too.

If my plugin insert images automatically, it will dependent other feature by any way. Markdown file would not know image file path. It’s not good.

And, I have no will to add custom tag for my plugin. Markdown plugin should have only markdown syntax.

This is my opinion. But if you have other way that can avoid dependency, please let me know.

Thanks.