Merge pull request #2 from thomasgerard/master

Fixed PhpSpreadsheet version in composer.json

Author: AidasK

composer.json

@@ -20,7 +20,7 @@
     "require": {
         "php": ">=7.0.0",
         "illuminate/support": "5.*|6.*",
-        "phpoffice/phpspreadsheet": "dev-master"
+        "phpoffice/phpspreadsheet": "^1.11"
     },
     "autoload": {
         "psr-4": {