Send events through channel

Look at this broken piece of code:

```rust
  let mut xml = Reader::from_reader(...);
  let (tx, rx) = mpsc::channel::<Event>();
  let mut buf = Vec::new();
  
  loop {
      let ev = xml.read_event(&mut buf);
      tx.send(ev.unwrap());
  }
}
```

I'd like to decode the XML in one thread and send the events via a channel. Do you have a minimum example on how to do this?