jekyll addon that uses github personal access tokens to publish from website.
They can be generated from here. Remember to give READ/WRITE permissions to token.
You can simply add the git repo as a submodule in your jekyll post.
Alternatively you can also use the editor at georoot.github.io. Because the personal tokens are only saved on local browser, make sure to logout if you are working on a not personal system.
To add as a submodule on existing jekyll blog
git submodule add https://github.com/georoot/jekyll.js admin
and then you can simply visit <username>.github.io/admin to access
the editor.