Fix Plugin version

Author: Benjamin Pick

geoip-detect.php

@@ -5,7 +5,7 @@
 Description:     Provides geographic information detected by an IP adress.
 Author:          Yellow Tree (Benjamin Pick)
 Author URI:      http://www.yellowtree.de
-Version:         5.5.1-beta1
+Version:         5.6.0
 License:         GPLv3 or later
 License URI:     http://www.gnu.org/licenses/gpl-3.0.html
 Text Domain:     geoip-detect