Add link to comtodon.

README.adoc

@@ -2,6 +2,10 @@
 :uri-mastodon-js: https://github.com/Kirschn/mastodon.js
 :uri-jquery: https://jquery.com/download/
 
+[TIP]
+After I wrote this, I discovered a far better solution:
+https://git.wadza.fr/me/comtodon[comtodon].
+
 == Setup
 
 First copy `mastodon-api-comments.html` to your shortcodes directory. This is