message: Should take an event rather than an event_id
diff: @@ -174,7 +174,7 @@ export class MatrixRoomHandler {
  const intent = this.bridge.getIntent();
  // Due to #257 we need to check if we are joined.
  try {
  - await intent.getClient().sendReadReceipt(event.event_id);
  + await intent.getClient().sendReadReceipt(event);
  } catch (ex) {
  log.warn("Couldn't send a read reciept into the room:", ex, ". Ignoring command.");
  return;
  