Allow Laravel ^5.3

Author: tomas-novotny

Diff for: README.md

@@ -29,6 +29,8 @@
 composer require inspirum/mcrouter
 ```
 
+This package supports Laravel 5.3 or later (including Laravel 6).
+
 For Laravel 5.4 and below it necessary to register the service provider in `config/app.php`.
 
 ```php

Diff for: composer.json

@@ -22,9 +22,9 @@
   "require": {
     "ext-memcached": "*",
     "php": ">=7.1.3",
-    "illuminate/cache": "5.6.*|5.7.*|5.8.*|^6.0",
-    "illuminate/session": "5.6.*|5.7.*|5.8.*|^6.0",
-    "illuminate/support": "5.6.*|5.7.*|5.8.*|^6.0"
+    "illuminate/cache": "^5.3|^6.0",
+    "illuminate/session": "^5.3|^6.0",
+    "illuminate/support": "^5.3|^6.0"
   },
   "require-dev": {
     "phpunit/phpunit": "^7.0|^8.0",