It looks like everybody who used Bootstrap wanted to integrate a more beautiful and interesting navbar to their project.
We restyled the classic Bootstrap Navbar and we added brand new icons. You can find it here: http://www.creative-tim.com/product/navbar-with-icons, along with extra information. If you want to add icons to the regular navbar you have to add to your project the files you can download at Creative Tim.
Many thanks to our friends from Pixeden for the icons font. More details about the icons names can be found here: http://themes-pixeden.com/font-demos/7-stroke/index.html.
So, refresh your old project with something brand new like this navbar!
Get more useful items for Bootstrap on Creative Tim.