Add DWT alias to readme

README.md

@@ -27,6 +27,9 @@ TUM_USERNAME=ab34efg TUM_PASSWORD=hunter2 cargo run -- DS ds
 - `GAD`
 - `LA`
 
+### SS18
+- `DWT`
+
 ## How to determine a catalog name
 
 Open the Mediasite listing page, right-click and "View page source" (or "View frame source" if the listing is embedded in moodle).