Fold WinJS template into the winjs-pivot-sample.
Thanks to the magic of msParentSelectorScope, we can remove
the gnarly DOMContentLoaded handler and defining the template globally.
Merge pull request #10 from dglazkov/template

Fold WinJS template into the winjs-pivot-sample. thanks!
porting changes now that http://try.buildwinjs.com/#pivot works cross-browser (showing header nav buttons)