ways to publish pages in github using markdown without having to install jekyll or other tools

I intend to publish articles on my user page in github. I want to write my articles as markdown files and push them to a branch in my user.github.io repo and let github automatically generate HTML files for me without having to use a tool like Jekyll . Can it be done ? If so how can I do it ? I pushed a index.markdown files to gh-pages branch but couldnt find any auto-generated html files.