New extension - checkradio (#1103)

* New extension - checkradio

* Fix wrong copy/paste

* Fix multiple switch declaration

docs/extensions.html

@@ -3,6 +3,11 @@ title: Extensions
 layout: default
 route: extensions
 extensions:
+- name: bulma-checkradio
+  url: https://github.com/Wikiki/bulma-checkradio
+  slug: bulma-checkradio
+  width: 758
+  height: 67
 - name: bulma-switch
   url: https://github.com/Wikiki/bulma-switch
   slug: bulma-switch