doc: add 1.1.0rc0 news (#136)

Author: chenliu0831

README.md

@@ -18,6 +18,7 @@ There are 4 main components of Deequ, and they are:
 ![](imgs/pydeequ_architecture.jpg)
 
 ## 🎉 Announcements 🎉
+- **NEW!!!** As of 06/19, 1.1.0rc0 of Python Deequ is published https://github.com/awslabs/python-deequ/releases/tag/v1.1.0rc0. We will bake for around 2 weeks. Any feedbacks are welcome through github issues.
 - With PyDeequ v0.1.8+, we now officially support Spark3 ! Just make sure you have an environment variable `SPARK_VERSION` to specify your Spark version! 
 - We've release a blogpost on integrating PyDeequ onto AWS leveraging services such as AWS Glue, Athena, and SageMaker! Check it out: [Monitor data quality in your data lake using PyDeequ and AWS Glue](https://aws.amazon.com/blogs/big-data/monitor-data-quality-in-your-data-lake-using-pydeequ-and-aws-glue/).
 - Check out the [PyDeequ Release Announcement Blogpost](https://aws.amazon.com/blogs/big-data/testing-data-quality-at-scale-with-pydeequ/) with a tutorial walkthrough the Amazon Reviews dataset!