Laravel 6.0 Compatibility (#86)

* Laravel 6.0 Compatibility

* Update composer.json

Author: oriceon

Diff for: composer.json

@@ -11,8 +11,8 @@
     ],
     "require": {
         "php": ">=7",
-        "illuminate/support": "5.5.x|5.6.x|5.7.x|5.8.x",
-        "illuminate/console": "5.5.x|5.6.x|5.7.x|5.8.x",
+        "illuminate/support": "^5.5|^6",
+        "illuminate/console": "^5.5|^6",
         "symfony/process": "^3.2|^4"
     },
     "autoload": {