chore: update README.md and mmlc_installer.php for modified 3.1.2

Author: RobinTheHood

README.md

@@ -23,7 +23,7 @@ Folge der Installationsanleitung auf [module-loader.de](https://module-loader.de
 
 ## Requirements
 - PHP 7.4 or above
-- modified 2.0.6.0 to 3.0.2
+- modified 2.0.6.0 to 3.1.2
 
 ## Authors
 - Robin Wieschendorf | <[email protected]> | [robinwieschendorf.de](https://robinwieschendorf.de)

mmlc_installer.php

@@ -15,7 +15,7 @@
 ini_set('display_errors', 1);
 error_reporting(E_ALL & ~E_NOTICE);
 
-define('VERSION', '0.9.0');
+define('VERSION', '0.11.0');
 
 class Installer
 {
@@ -34,7 +34,10 @@ class Installer
         "2.0.7.2",
         "3.0.0",
         "3.0.1",
-        "3.0.2"
+        "3.0.2",
+        "3.1.0",
+        "3.1.1",
+        "3.1.2"
     ];
 
     public function invoke()