Update composer.json

Author: Torann

composer.json

@@ -21,7 +21,7 @@
   ],
   "require": {
     "php": ">=5.5.9",
-    "illuminate/support": "~5.1|^6.0"
+    "illuminate/support": "~5.1|^6.0|~7.0"
   },
   "require-dev": {
     "phpunit/phpunit": "~5.0",