update readme.md

readme.md

@@ -74,6 +74,21 @@ poetry run ./build_binary.sh <team-name>
 
 Once binary generation is finished, the result will be inside the build folder, as ```<team-name>.tar.gz```
 
+### GYM
+
+To use the gym, you need to install the following dependencies:
+```bash
+pip install gymnasium
+pip install psutil
+pip install stable-baselines3
+```
+
+Then, you can run gym examples under the ```GYM_CPU``` folder:
+```bash
+python3 -m scripts.gyms.Walk # Run the Walk gym example
+                             # of course, you can run other gym examples
+```
+
 ### Authors and acknowledgment
 This project was developed and contributed by:
 - **Chenxi Liu**