Add UnauthenticatedRouteMixin
Rename alreadyAuthenticatedRoute to isAuthenticatedRoute, default index
Describe test
Add UnauthenticatedRouteMixin to example
Add UnauthenticatedRouteMixin to asset compilation
Merge pull request #1 from peterchoo/unauthenticated-route

Unauthenticated route
Merge branch 'unauthenticated-route' of https://github.com/jacobthemyth/ember-simple-auth into next

Conflicts:
	packages/ember-simple-auth/wrap/browser.end