Add Laravel 5.6 Support

Author: nmfzone

composer.json

@@ -27,8 +27,8 @@
  "geocoder-php/geo-plugin-provider": "^4.0",
  "geocoder-php/google-maps-provider": "^4.0",
  "guzzlehttp/psr7": "*",
- "illuminate/cache": "5.0 - 5.5",
- "illuminate/support": "5.0 - 5.5",
+ "illuminate/cache": "5.0 - 5.6",
+ "illuminate/support": "5.0 - 5.6",
  "php-http/curl-client": "^1.7",
  "php": "^7.0",
  "willdurand/geocoder": "^4.0"