AngularJS Visual Studio 2012 Intellisense support
see http://refactorthis.wordpress.com/2013/02/16/angularjs-visual-studio-2012-intellisense/
Simply extract to 'Common7\Packages\schemas\html' in your Visual Studio install directory. For me that's "C:\Program Files (x86)\Microsoft Visual Studio 11.0\Common7\Packages\schemas\html".
Overwrite the existing files and restart visual studio.
You should now have intellisense support for angular directives!