Added tabs_justified, pills_justified and bootstrap example
navbar_justified - requires the following .css

http://getbootstrap.com/examples/justified-nav/justified-nav.css

adjustments are required to the .css in order to prevent overwriting
nav-justified on other components.

Example:

.nav-justified > #navigation .nav-justified
Merge pull request #88 from hyperunknown/2.0

Added tabs_justified, pills_justified and bootstrap example navbar_justified