deliteful/Toaster widget

I've noticed that calling .placeAt() then .startup() do not produce quite the same result. I'm not sure whether it's a bug or the way it's supposed to work. Say i have:
```js
var w = new MyWidget()
w.placeAt("somewhere")
w.startup()

w.on("someEvent", suchCallback)
```
It seems that if I don't call .startup(), suchCallback is never executed.