Merge pull request #15 from mrvnklm/master

Update composer.json for laravel/horizon ^3.0 compatibility

Author: StevePorter92

composer.json

@@ -12,7 +12,7 @@
     ],
     "require": {
         "illuminate/support": "^5.7",
-        "laravel/horizon": "^1.4 || ^2.0",
+        "laravel/horizon": "^1.4 || ^2.0 || ^3.0",
         "vladimir-yuldashev/laravel-queue-rabbitmq": "^7.1.1"
     },
     "autoload": {