Fix doc - turns out the minimum req is PHP 5.4 because of http_response_code(). I could strip this out for PHP5.3 compat but there's not really much point as PHP5 is very very deprecated anyway. fixes #82

Author: ben-xo

README.md

@@ -63,7 +63,7 @@ Thanks to the people who wrote these guides!
 REQUIREMENTS
 ================================================================================
 
-dir2cast requires PHP 5.3 minimum. It requires the XML extension to be enabled.
+dir2cast requires PHP 5.4 minimum. It requires the XML extension to be enabled.
 
 It has been tested up to PHP 8. Please file a bug if you find any PHP version
 specific problems: https://github.com/ben-xo/dir2cast/issues