Merge pull request spinen#19 from wertmenschen/develop

Make compatible with Laravel 5.6

Author: ssfinney

composer.json

@@ -21,8 +21,8 @@
     ],
     "require": {
         "php": ">=5.5.0",
-        "illuminate/contracts": "5.1.*|5.2.*|5.3.*|5.4.*|5.5.*",
-        "illuminate/support": "5.1.*|5.2.*|5.3.*|5.4.*|5.5.*",
+        "illuminate/contracts": "5.1.*|5.2.*|5.3.*|5.4.*|5.5.*|5.6.*",
+        "illuminate/support": "5.1.*|5.2.*|5.3.*|5.4.*|5.5.*|5.6.*",
         "phayes/geophp": "~1.2"
     },
     "require-dev": {