Let's have examples

Let's write some examples, since it's going to be easier than writing some real docs. This could be just a simple (and I mean 100 lines of code simple) JS app with adapters to make it work with a few popular frameworks (say django+tastypie, django+drf, flask-restless, rails... server-side is going to be easy, really). This commit is a tastypie app skeleton, it's not done yet.

Also something's wrong in the manager, we're going to need to investigate on this. Some Backbone API changes went unnoticed perhaps? The options.success callback in Manager.create seems to be called wrong. This fixes it, but it isn't really a clean fix.