Support turbolinks 5.x events, while maintaining backwards compatibility

app/assets/javascripts/blacklight/core.js

@@ -9,17 +9,31 @@ Blacklight = function() {
       for(var i = 0; i < buffer.length; i++) {
         buffer[i].call();
       }
+    },
+
+    listeners: function () {
+      var listeners = [];
+      if (Turbolinks && Turbolinks.supported) {
+        // Turbolinks 5
+        if (Turbolinks.BrowserAdapter) {
+          listeners.push('turbolinks:load');
+        } else {
+          // Turbolinks < 5
+          listeners.push('page:load', 'ready');
+        }
+      } else {
+        listeners.push('ready');
+      }
+
+      return listeners.join(' ');
     }
-  }
+  };
 }();
 
 // turbolinks triggers page:load events on page transition
 // If app isn't using turbolinks, this event will never be triggered, no prob. 
-$(document).on('page:load', function() {
+$(document).on(Blacklight.listeners(), function() {
   Blacklight.activate();  
 });
 
-$(document).ready(function() {
-  Blacklight.activate();  
-});