Fix license

Author: DivineOmega

composer.json

@@ -3,7 +3,7 @@
     "description": "Laravel Route Restrictor - Laravel 5.1 Middleware to restrict a site or specific routes using HTTP basic authentication",
     "keywords": ["password", "restriction", "password restriction", "laravel", "basic authentication"],
     "homepage": "https://github.com/DivineOmega/laravel-route-restrictor",
-    "license": "LGPL3",
+    "license": "LGPL-3.0-only",
     "require": {
         "php": ">=5.5.9",
         "illuminate/contracts": "^5.1|^5.2",