Add github stars to readme file (#477)

README.md

@@ -101,3 +101,7 @@ pytest -s --keep-artifacts=t
 Thanks to all the contributors for building, reviewing and testing.
 
 [![Contributors](https://contrib.rocks/image?repo=aws-samples/awsome-distributed-training)](https://github.com/aws-samples/awsome-distributed-training/graphs/contributors)
+
+## 7.Star History
+
+[![Star History Chart](https://api.star-history.com/svg?repos=aws-samples/awsome-distributed-training&type=Date)](https://star-history.com/#aws-samples/awsome-distributed-training&Date)