Add connpass link

index.md

@@ -103,6 +103,16 @@ workshop is only open to people from a particular institution.
 {% include lc/who.html %}
 {% endif %}
 
+{% comment %}
+REGISTRATION
+{% endcomment %}
+
+<p>
+  <strong>登録:</strong>
+  <a href="https://carpentries.connpass.com/event/316747/">Connpass</a>から登録して下さい。
+</p>
+
+
 {% comment %}
 LOCATION