change development to prod in index page

index.php

@@ -55,7 +55,7 @@ date_default_timezone_set("Asia/Kolkata");
  *
  * NOTE: If you change these, also change the error_reporting() code below
  */
-	define('ENVIRONMENT', isset($_SERVER['CI_ENV']) ? $_SERVER['CI_ENV'] : 'development');
+	define('ENVIRONMENT', isset($_SERVER['CI_ENV']) ? $_SERVER['CI_ENV'] : 'production');
 
 /*
  *---------------------------------------------------------------