Make node.js URI handling more transparent in favour of making the REST API more visible

[kareblak]

This is a REST workshop, and time spent on flickering about in node.js should be reduced as much as possible. In my opinion this can be achieved by employing a HTTP framework for easier handling of routes/plan/resources, unlike the massive block of logic used in the example and starting code. E.g. Express could elevate the focus on REST and the handling of resources in this example by providing clearer routes and less boilerplate logics.