requirements: php 5.3 -> php 5.4

README.md

@@ -13,7 +13,7 @@ Support and announcements: https://int.vichan.net/devel/
 
 Requirements
 ------------
-1.	PHP >= 5.3
+1.	PHP >= 5.4 (we still try to keep compatibility with php 5.3 as much as possible)
 2.	MySQL/MariaDB server
 3.	[mbstring](http://www.php.net/manual/en/mbstring.installation.php) 
 4.	[PHP GD](http://www.php.net/manual/en/intro.image.php)