message: add code comment
diff: @@ -3,10 +3,9 @@ const request = require('request');
  module.exports = function(controller) {
  controller.hears('dm me', 'message', async(bot, message) => {
  - // huzzah
  - console.log('starting a new convo...');
  + // this does not work with Bot Framework Emulator.
  + // to achieve the same thing, use bot.changeContext(message.reference);
  await bot.startConversationWithUser(message.reference);
  - console.log('sending reply...');
  await bot.say('Hello! (in private');
  });
  