Update README.md

Author: LXRbecky

README.md

@@ -90,6 +90,14 @@ The design is inspired by the following two sources:
 
 **10% of the final grade**
 
+This milestone presents the initial working prototype of our AIS data visualization project. It includes the core design of a multi-view interactive system analyzing vessel traffic around major U.S. ports.
+
+A detailed description of the project design, dataset, and implementation can be found in the Milestone 2 report.
+
+📄 See: `milestone2.pdf`
+
+🌐 Interactive prototype:
+https://com-480-data-visualization.github.io/DataVision2/
 
 ## Milestone 3 (29th May, 5pm)