small updates

presentation.md

@@ -18,7 +18,13 @@ This project:
 
 - Recall: each component can be only claimed by one group member
 - I created this project alone
-- I only claim to complete **game design**
+- I only claim to complete **user interaction**, including:
+  - Click to add route nodes
+  - Drag to edit route nodes
+  - A* pathfinding updates instantly on node movement
+  - UI provides immediate feedback on cost and ridership
+  - Multiple mapping layers to help plan out building routes
+  - Save/load system
 - You only will grade me on that category
 - All other categories you should score with a 1, as I do not claim to complete
   them