Update footer.html

Author: gitstua

_includes/footer.html

@@ -40,6 +40,15 @@
         {% endif %}
       {% endif%}
       </p>
+              
+      <script src="https://utteranc.es/client.js"
+        repo="gitstua/gitstua.github.io"
+        issue-term="url"
+        theme="github-light"
+        crossorigin="anonymous"
+        async>
+      </script>
+
           <!-- Please don't remove this, keep my open source work credited :) -->
     <p class="theme-by text-muted">
       Theme by