Update README.md

Author: nikitardn

README.md

@@ -13,8 +13,13 @@ cd rsl_rl
 pip install -e .
 ```
 
+### Useful Links ###
+Example use case: https://github.com/leggedrobotics/legged_gym  
+Project website: https://leggedrobotics.github.io/legged_gym/  
+Paper: https://arxiv.org/abs/2109.11978
+
 **Maintainer**: Nikita Rudin  
-**Affiliation**: Robotic Systems Lab, ETH Zurich & NVIDIA
+**Affiliation**: Robotic Systems Lab, ETH Zurich & NVIDIA  
 **Contact**: [email protected]