fix(ncyBreadcrumb): display the correct breadcrumb in case of direct access

When the breadcrumb relies on nested views, the $viewContentLoaded event used by the directive occurs many times. The event related to the deepest view (the correct one for the breadcrumb) is not necessary the last one.
We use the '$id' property to get the 'lastly created' scope.

Closes #10
Merge branch 'master' of https://github.com/ncuillery/angular-breadcrumb