message: Show status on conversation end debug message
  Minor change - debug message: Show the status when the conversation is over. I need this for debugging an edge case in my bot an I suspect it might be useful to others.
diff: @@ -487,7 +487,7 @@ function Botkit(configuration) {
  this.handler = null;
  this.messages = [];
  this.status = status || 'stopped';
  - botkit.debug('Conversation is over!');
  + botkit.debug('Conversation is over with status ' + this.status);
  this.task.conversationEnded(this);
  };
  