Update README.md

Author: chaitjo

README.md

@@ -101,3 +101,9 @@ cd ..
 # Run the data generation script
 python generate_tsp_concorde.py --num_samples <num-sample> --num_nodes <num-nodes>
 ```
+
+## Resources
+
+- [Optimal TSP Datasets generated with Concorde](https://drive.google.com/open?id=1-5W-S5e7CKsJ9uY9uVXIyxgbcZZNYBrp)
+- [Paper on arXiv](https://arxiv.org/abs/1906.01227)
+- [Follow-up workshop paper](https://arxiv.org/abs/1910.07210)