Added Bootstrap 3 to bower.json. Configured bower.json to corresponding css/js/font files from Bootstrap 3.
Added .gitignore to exclude node_modules and public/lib folder.
Moved ng-controller attribute to header tag. Changed header tag to nav tag.
WIP: Updating navbar to Bootstrap 3 - Added toggle button to enable responsive navbar
Completed updating navbar to be compatible with Bootstrap 3.
Removed script tag that included bootstrap-responsive, since it's no longer needed in Bootstrap 3.