Add isso comments to style (#3)

* Include isso script/section
* Wrap in div to ensure correct position on the page

Co-authored-by: Jennifer C J Radtke <jcj.radtke@gmail.com>
Reviewed-on: #3

index.twig

@@ -50,7 +50,13 @@
 			{{ content }}
 		</div>
 	</section>
-	
+	<div class="container">
+		<script data-isso="//comments.writing.straysong.co.uk/"
+	        src="//comments.writing.straysong.co.uk/js/embed.min.js"></script>
+		<section id="isso-thread">
+			<noscript>Javascript is needed to display comments.</noscript>
+		</section>
+	</div>
 	<footer>
 		<div class="container">
 			<div class="row">