The navigation renderer should be as simple as adding to a page. Check the videos above it has examples of multi-level also, you just create a folder with the same name as a page and everything created inside that folder is parsed and rendered as a child.
If there is any error of problem please report it back and I can take a look, but it should be as simple as in the videos above.
Also, check this for the case sensitive route issue:
I am awaiting info on this unfortunate limitation in Aurelia.