Support explicit markdown URLs like docsify #287

Can I override the "readme.md" bit and set the markdown URL explicitly?

In Docsify I can do this: homepage: 'https://my.domain.com/files/RandomFile.md'

P.S. All I'm trying to do is to render ONE markdown file from another domain. That's it. Currently it's not possible. Spent 30 minutes digging through the docs, gave up and did the same in docsify in 7 seconds, no prev experience...