Merge pull request #37 from if4lcon/master

Update composer.json to support Laravel 5.7

Author: mpociot

composer.json

@@ -17,7 +17,7 @@
     ],
     "require": {
         "php": "^7.1",
-        "illuminate/support": "5.5.*|5.6.*"
+        "illuminate/support": "5.5.*|5.6.*|5.7.*"
     },
     "require-dev": {
         "orchestra/testbench": "3.6.*",