Fixed links

Links to same-page anchors were treated as external links.
Merge pull request #11354 from Ore4444/patch-1

Fixed links
update node.js to v0.10.x (current stable)
add Grunt task to change version numbers; fixes #11332
Merge pull request #11335 from twbs/version-number-updater

add Grunt task to change version numbers
Add feature for request: #11165

Adding a .collapsed class to the Collapsible Group panel-heading
Add support of extra styling class on collapse event
Add data-class attribute documentation for collapse.js
Add an .active class to collapsed in panels

This feature has been suggested at #11350.
https://github.com/twbs/bootstrap/pull/11350#issuecomment-27751350
Remove example files

Was being committed by mistake
Merge branch 'accordion-custom-collapsible-group' of https://github.com/ziogaschr/bootstrap into accordion-custom-collapsible-group