Upgrade to Laravel 6.

Author: devinsays

composer.json

@@ -4,10 +4,10 @@
     "license": "MIT",
     "type": "project",
     "require": {
-        "php": "^7.1.3",
+        "php": "^7.2",
         "barryvdh/laravel-cors": "^0.11.0",
         "fideloper/proxy": "^4.0",
-        "laravel/framework": "5.8.*",
+        "laravel/framework": "^6.0",
         "laravel/tinker": "^1.0",
         "tymon/jwt-auth": "^1.0.0",
         "hashids/hashids": "^4.0"