Fix Laravel 5.5 Package Auto-Discovery feature in composer.json

See https://medium.com/@taylorotwell/package-auto-discovery-in-laravel-5-5-ea9e3ab20518

Author: tortuetorche

composer.json

@@ -52,13 +52,15 @@
         "Jql\\": "tests/fixtures/jql/"
       }
     },
-    "config": {
-        "preferred-install": "dist"
-    },
-    "laravel": {
+    "extra": {
+      "laravel": {
         "providers": [
-            "Efficiently\\JqueryLaravel\\JqueryLaravelServiceProvider"
+          "Efficiently\\JqueryLaravel\\JqueryLaravelServiceProvider"
         ]
+      }
+    },
+    "config": {
+        "preferred-install": "dist"
     },
     "prefer-stable": true,
     "minimum-stability": "dev"