Add usage code to README

README.md

@@ -26,12 +26,13 @@ This is a trained model of a **PPO** agent playing **LunarLander-v2**
 using the [stable-baselines3 library](https://github.com/DLR-RM/stable-baselines3).
 
 ## Usage (with Stable-baselines3)
-TODO: Add your code
-
-
 ```python
-from stable_baselines3 import ...
 from huggingface_sb3 import load_from_hub
+from stable_baselines3 import PPO
 
-...
+checkpoint = load_from_hub(
+	repo_id="benedikt-schaber/ppo-LunarLander-v2",
+	filename="ppo-LunarLander-v2.zip",
+)
+model = PPO.load(checkpoint)
 ```