public/chat.html

<html>
    <head>
        <title>Botkit Anywhere</title>
        <script src="https://cdnjs.cloudflare.com/ajax/libs/handlebars.js/4.0.10/handlebars.min.js"></script>
        <script src="https://cdn.rawgit.com/showdownjs/showdown/1.7.4/dist/showdown.min.js"></script>
        <link rel="stylesheet" href="css/styles.css" />
        <meta name="viewport" content="width=device-width, initial-scale=1.0">
    </head>
    <body >
      <div class="wrapper">

        <div id="message_window">
            <div class="disconnected">
                Disconnected... reconnecting!
            </div>
            <div class="offline">
                Offline! Reload to reconnect.
            </div>
            <div class="powered_by">
              Powered by <a href="https://botkit.ai" target="_blank" title="Building Blocks for Building Bots"><img src="/botkit_icon.png" width="15" height="15" alt="Botkit Logo" /> Botkit</a>
            </div>
            <section>
                <div id="message_list">
                    <div id="message_template">
                        <div class="message {{message.type}}">
                            {{#if message.isTyping}}
                              <div class="typing-indicator">
                                <span></span>
                                <span></span>
                                <span></span>
                              </div>
                            {{/if}}
                            {{{message.html}}}

                            {{#if message.open_link}}
                              <a href="{{{message.open_link}}}" target="_blank" class="button_message">{{#if message.link_title}}{{message.link_title}}{{else}}{{message.open_link}}{{/if}}</a>
                            {{/if}}
                        </div>
                        {{#message.files}}
                          <div class="file_attachment">
                          {{#if image}}
                            <img src="{{{url}}}" alt="{{{url}}}" />
                          {{else}}
                            <a href="{{{url}}}" title="{{{url}}}">{{{url}}}</a>
                          {{/if}}
                          </div>
                        {{/message.files}}
                    </div>
                </div>
            </section>
            <div id="message_replies">
            </div>
            <footer>
                <form onsubmit="Botkit.send(Botkit.input.value, event)">
                    <input type="text" autocomplete="off" id="messenger_input" placeholder="Type here..." />
                    <button type="submit">Send</button>
                </form>
            </footer>
        </div>
        </div>
        <script src="client.js"></script>
    </body>
</html>