Making graphs of transitions with ART

A nice demo which could demonstrate transitions even more would be drawing a graph with ART.

Maybe something like:

```
var fx = new Fx(), path = new ART.Path;
fx.set = function(now){
    path.lineTo(now)
};
```

Don't know exactly how it will look like or work, but after ART will be released, this would be a nice additional demo :)
