Allow laravel 5.3 support and filesystem

Author: Jaspaul

composer.json

@@ -11,8 +11,8 @@
     ],
     "require": {
         "php": ">=5.5.9",
-        "illuminate/support": "5.1.* || 5.2.*",
-        "illuminate/filesystem": "5.1.* || 5.2.*",
+        "illuminate/support": "5.1.* || 5.2.* || 5.3.*",
+        "illuminate/filesystem": "5.1.* || 5.2.* || 5.3.*",
         "doctrine/annotations": "1.2.*",
         "phpdocumentor/reflection-docblock": "3.1.*"
     },