Update README.md

Add 3dgs view instructions.

README.md

@@ -200,6 +200,25 @@ The `colmap/` directory in each sequence contains pre-computed camera intrinsics
 | BiancaGolden_SyncopatedGroove | 919 | 28 | Coming soon |
 | RobertRubama_RussiaRehearsal | 727 | 28 | Coming soon |
 
+## How to View 3DGS
+
+Pre-computed 3D Gaussian Splatting (3DGS) reconstructions are available under the `/3dgs` directory. Each `.zip` file corresponds to one dance sequence and contains multiple `.ply` files — one per frame.
+
+**Download and decompress:**
+```bash
+unzip AttitudePromenade.zip
+```
+On Mac, you can also double-click the `.zip` file in Finder. On Windows, right-click and use a tool like 7-Zip or WinRAR.
+
+**View a single frame:**
+1. Go to [https://superspl.at/editor](https://superspl.at/editor)
+2. Upload a single `.ply` file
+
+**Playback multi-frame animation:**
+1. Go to [https://superspl.at/editor](https://superspl.at/editor)
+2. Upload all `.ply` files from the sequence at once
+3. Hit the **Play** button above the timeline
+
 ## Technical Details
 
 - **Resolution**: 800 x 1280