GitHub repository: zhekanax/simple_navigation_renderers
Description: simple_navigation_renderers gem adds renderers for Bootstrap 2 and 3. With these renderers you will be able create any bootstrap navigation elements, such as: submenu, navbar-text, divider, header. As well as add icons to menu elements, such as: gliphicons, font-awesome icons, even custom icons. Also you have split option for main menu containing submenu.