Support Laravel 6.0 (#10)

Author: nicolocaruso85

composer.json

@@ -7,7 +7,7 @@
   "require": {
     "guzzlehttp/guzzle": "~6.0",
     "nesbot/carbon": "~1.2|~2.0",
-    "illuminate/support": "~5.1|~5.2|~5.3|~5.4|~5.5|~5.6|~5.7|~5.8"
+    "illuminate/support": "~5.1|~5.2|~5.3|~5.4|~5.5|~5.6|~5.7|~5.8|~6.0"
   },
   "extra": {
     "laravel": {