update

README.md

@@ -2,18 +2,8 @@
 
 [![Software License](https://img.shields.io/badge/license-MIT-brightgreen.svg?style=flat-square)](./LICENSE) [![PyPI - Downloads](https://img.shields.io/pypi/dw/cmaes)](https://pypistats.org/packages/cmaes)
 
-**_Simple_** and **_Practical_** CMA-ES implementation in Python.
+*Simple* and *Practical* CMA-ES implementation in Python.
 
-#### _Simplicity_ :
-* [CMA-ES](https://arxiv.org/abs/1604.00772) [Hansen 2016] implementation with *high code readability*
-* This is suitable for quick use of CMA-ES as well as for educational purposes and easy integration into other
-libraries
-
-#### _Practicality_ :
-* implementations of highly practical methods with easy-to-use APIs
-* The methods include [LRA-CMA](https://arxiv.org/abs/2304.03473) [Nomura et al. 2023] (removing hyperparameter tuning), [WS-CMA](https://arxiv.org/abs/2012.06932) [Nomura et al. 2021] (transfer learning), and [CMAwM](https://arxiv.org/abs/2205.13482) [Hamano et al. 2022] (mixed-integer optimization)
-
-(We also provide [animated visualization](./tools/cmaes_visualizer.py).)
 ![visualize-six-hump-camel](https://user-images.githubusercontent.com/5564044/73486622-db5cff00-43e8-11ea-98fb-8246dbacab6d.gif)
 
 ## Installation
@@ -344,6 +334,7 @@ if __name__ == "__main__":
 
 Full source code is available [here](./examples/ipop_cma.py).
 
+</details>
 
 ## Links