Add ruby on rails detection

src/technologies/r.json

@@ -2379,7 +2379,8 @@
     "implies": "Ruby",
     "js": {
       "ReactOnRails": "",
-      "__REACT_ON_RAILS_EVENT_HANDLERS_RAN_ONCE__": ""
+      "__REACT_ON_RAILS_EVENT_HANDLERS_RAN_ONCE__": "",
+      "_rails_loaded": ""
     },
     "meta": {
       "csrf-param": "^authenticity_token$\\;confidence:50"
@@ -2481,4 +2482,4 @@
     "scripts": "/recaptcha/api\\.js",
     "website": "https://www.google.com/recaptcha/"
   }
-}
+}