Deprecate CI_Config::system_url()
diff --git a/system/core/Config.php b/system/core/Config.php
index a0e830a..93c950e 100644
--- a/system/core/Config.php
+++ b/system/core/Config.php
@@ -332,6 +332,7 @@
 	/**
 	 * System URL
 	 *
+	 * @deprecated	3.0.0	Encourages insecure practices
 	 * @return	string
 	 */
 	public function system_url()