Update README.md

README.md

@@ -32,6 +32,10 @@ RL4CO is built upon:
 
 ![RL4CO Overview](https://github.com/ai4co/rl4co/assets/34462374/4d9a670f-ab7c-4fc8-9135-82d17cb6d0ee)
 
+
+We provide several utilities and modularization. For autoregressive policies, we modularize reusable components such as _environment embeddings_ that can easily be swapped to [solve new problems](https://github.com/ai4co/rl4co/blob/main/notebooks/tutorials/2-creating-new-env-model.ipynb)
+![policy_overview](https://github.com/ai4co/rl4co/assets/48984123/d530b278-a2cf-46d2-adfe-d8f409790e14)
+
 ## Getting started
 <a href="https://colab.research.google.com/github/ai4co/rl4co/blob/main/notebooks/1-quickstart.ipynb"><img src="https://colab.research.google.com/assets/colab-badge.svg" alt="Open In Colab"></a>
 
@@ -70,7 +74,6 @@ python run.py
 ```
 
 
-
 <details>
     <summary>Change experiment</summary>
 
@@ -153,7 +156,6 @@ pip install torch_geometric
 
 
 ## Contributing
-[![Slack](https://img.shields.io/badge/slack-chat-611f69.svg?logo=slack)](https://join.slack.com/t/rl4co/shared_invite/zt-1ytz2c1v4-0IkQ8NQH4TRXIX8PrRmDhQ)
 
 Have a suggestion, request, or found a bug? Feel free to [open an issue](https://github.com/ai4co/rl4co/issues) or [submit a pull request](https://github.com/ai4co/rl4co/pulls).
 If you would like to contribute, please check out our contribution guidelines   [here](.github/CONTRIBUTING.md). We welcome and look forward to all contributions to RL4CO!
@@ -165,7 +167,7 @@ We are also on [Slack](https://join.slack.com/t/rl4co/shared_invite/zt-1ytz2c1v4
   <img src="https://contrib.rocks/image?repo=ai4co/rl4co" />
 </a>
 
-## Cite us
+## Citation
 If you find RL4CO valuable for your research or applied projects:
 
 ```bibtex
@@ -177,3 +179,16 @@ If you find RL4CO valuable for your research or applied projects:
     url = {https://github.com/ai4co/rl4co}
 }
 ```
+
+## Join us
+[![Slack](https://img.shields.io/badge/slack-chat-611f69.svg?logo=slack)](https://join.slack.com/t/rl4co/shared_invite/zt-1ytz2c1v4-0IkQ8NQH4TRXIX8PrRmDhQ)
+
+We invite you to join our AI4CO community, an open research group in Artificial Intelligence (AI) for Combinatorial Optimization (CO)!
+
+
+
+<p align="center">
+  <img width="30%" src="https://github.com/ai4co/rl4co/assets/48984123/2f1298ef-15e1-4a66-9741-78ee75938789">
+</p>
+
+