add utterences

Author: gitstua

index.html

@@ -22,6 +22,14 @@
   });
 </script>
 
+<script src="https://utteranc.es/client.js"
+        repo="gitstua/gitstua.github.io"
+        issue-term="url"
+        theme="github-light"
+        crossorigin="anonymous"
+        async>
+</script>
+
 <div class="row">
   <div class="col-sm-12">
       <div class="text-center">