Made Environment Support optional. Comment out or delete the constant to stop environment checks.
diff --git a/system/core/Router.php b/system/core/Router.php
index 2c78efe..d451aab 100644
--- a/system/core/Router.php
+++ b/system/core/Router.php
@@ -87,7 +87,7 @@
 		}
 
 		// Load the routes.php file.
-		if (is_file(APPPATH.'config/'.ENVIRONMENT.'/routes'.EXT))
+		if (defined('ENVIRONMENT') AND is_file(APPPATH.'config/'.ENVIRONMENT.'/routes'.EXT))
 		{
 			include(APPPATH.'config/'.ENVIRONMENT.'/routes'.EXT);
 		}