Fixes #456
Add  test for submenus
Add submenu feature
Merge pull request #579 from olvap/submenus

Submenus
Badge and label helpers
uri_state added for chosen links
Patched navbar to use uri_state
Merge pull request #582 from gzigzigzeo/master

Various improvements
render_breadcrumbs now accepts a &block argument
Renamed #label to #tag_label to resolve conflict with form helper
Merge pull request #586 from gzigzigzeo/master

Fixes #585
Merge pull request #583 from mbillard/master

render_breadcrumbs now accepts a &block argument
use content_tag instead of strings
Merge pull request #587 from toadkicker/use_content_tag

use content_tag instead of strings
v.2.2.7
Update to later version of bootstrap to fix issue with firefox

- The issues is discussed here:
  https://github.com/twitter/bootstrap/issues/7118
Update README.md
Update README.md
Merge pull request #589 from shlensky/patch-1

Update README.md
Merge pull request #590 from EastAgile/master

Update to latest version of bootstrap to fix issue with firefox (cannot open new tab with Cmd+Click)