Added phpunit 5.7 and illuminate support 5.4 instead of dev-master

composer.json

@@ -13,12 +13,12 @@
             "Luthfi\\CrudGenerator\\": "src/"
         }
     },
-    "minimum-stability": "dev",
     "require": {
         "php": ">=7.0",
-        "illuminate/support": "dev-master"
+        "illuminate/support": "5.4.*"
     },
     "require-dev": {
+        "phpunit/phpunit": "~5.7",
         "orchestra/testbench": "~3.0"
     }
 }