Adds config file notice

config/config.inc.php.example

@@ -1,5 +1,12 @@
 <?php
 
+/*  DO NOT EDIT THIS FILE!
+    Instead, copy this config file to config.inc.php and make your changes
+    in the copied version. This is just a template!
+*/
+
+
+
 /*
  * MySQL server and database settings
  */
@@ -71,7 +78,7 @@ $admins = array("admin@domain.tld");
  * SHA-512, SHA-256, BLOWFISH
  */
 define("PASS_HASH_SCHEMA", "SHA-512");
- 
+
 //minimum password length
 define("MIN_PASS_LENGTH", 8);