title: message text formatting for Facebook channel
body: <p>I am sending a message that requires some basic formatting, mainly newline characters. </p>
  
  <p>The message displays fine in the emulator and the web client but the newline characters are ignored in the Facebook message. </p>
  
  <pre><code>await context.PostAsync($"{BotResponses.IntroText}\n{BotResponses.IntroTip}");
  </code></pre>
  
  <p>How can I format the text so that it works in Facebook as well?</p>