Jesuis is a Jekyll theme for profile pages. It is based on Jekyll's default Minima theme and Ethan Schoonover's Solarized color scheme.
If your site is hosted on GitHub Pages, you can add the theme remotely:
_config.yml
:remote_theme: yourname/jesuis
Jesuis is not gem-based, but you can use it as a regular Jekyll theme by cloning it as the starting point of your own site, or by merging it into your existing website.