message: Change the name of the branch that is used to handle timeout events (from timeout to on_timeout)
diff: @@ -571,7 +571,7 @@ function Botkit(configuration) {
  if (this.threads.timeout) {
  this.status = 'ending';
  - this.gotoThread('timeout');
  + this.gotoThread('on_timeout');
  } else {
  this.stop('timeout');
  }
  