Bootstrap Action Cable and Unicorn

app/views/layouts/application.html.haml

@@ -9,6 +9,7 @@
     = javascript_include_tag 'application', 'data-turbolinks-track' => true
 
     = csrf_meta_tags
+    = action_cable_meta_tag
   %body
     = render partial: 'layouts/support_navigator_banner'
     #beta{class:(Rails.env == 'production' ? '' : 'beta_staging')}