Adding navigatedTo and NavigatedFrom triggers to the router - completeNavigation

Adding navigatedTo and NavigatedFrom triggers to the router.js - completeNavigation function.  The third parameter in the trigger key is the moduleId of the active route.  

The route is mapped as:

router.map([
    { route: '', moduleId: 'viewmodels/myViewModel', title: 'My View', nav: true }
]).buildNavigationModel();

The triggers can be subscribed to:

router.on('router:navigatedTo:viewmodels/myViewModel', function () {
     alert('Navigated to myViewModel.')
});

router.on('router:navigatedFrom:viewmodels/myViewModel', function () {
     alert('Navigated from myViewModel.')
});