Add special 'dev' to composer keywords (#1713)

Author: jnoordsij

composer.json

@@ -1,7 +1,14 @@
 {
     "name": "barryvdh/laravel-debugbar",
     "description": "PHP Debugbar integration for Laravel",
-    "keywords": ["laravel", "debugbar", "profiler", "debug", "webprofiler"],
+    "keywords": [
+        "laravel",
+        "debugbar",
+        "profiler",
+        "debug",
+        "webprofiler",
+        "dev"
+    ],
     "license": "MIT",
     "authors": [
         {