Revise README for Milvus community information (#491)

Updated the README to reflect the Milvus community's mission, contribution guidelines, and community resources.

Author: AnthonyTsu1984

README.md

@@ -1,2 +1,40 @@
-# Free AI at api.airforce
-https://discord.gg/AJDsM7jtbq
+# Milvus Community
+
+Welcome to the Milvus community! The mission of the community is to make AI more easily accessible for more people. The main objective is to provide a platform where community members can share ideas, collaborate and learn from each other.
+
+You can become a Milvus contributor in many different ways, we value all forms of contribution including but not limited to:
+
+- Improve code 
+- Improve docs
+- Report bugs
+- Write blogs
+- Give talks
+- Provide ideas
+- Answer questions
+
+We adopted the principles created by: https://allcontributors.org/
+See [community_roles](https://github.com/milvus-io/community/blob/master/community_roles) for different roles of code contributors.
+
+
+## Contribution guidelines
+
+Contributions are welcomed and greatly appreciated. Please read our [contribution guidelines](CONTRIBUTING.md) for detailed contribution workflow. This project adheres to the [code of conduct](CODE_OF_CONDUCT.md) of Milvus. By participating, you are expected to uphold this code.
+
+We use [GitHub issues](https://github.com/milvus-io/milvus/issues) to track issues and bugs. For general questions and public discussions, please join our community.
+
+## Join our community
+
+:heart:To connect with other users and contributors, welcome to join our [Discord channel](https://discord.gg/FG6hMJStWu).
+
+See our [community](https://github.com/milvus-io/community) repository to learn about our governance and access more community resources.
+
+## Mailing lists
+
+-   [Milvus TSC](https://lists.lfai.foundation/g/milvus-tsc)
+-   [Milvus Technical Discuss](https://lists.lfai.foundation/g/milvus-technical-discuss)
+-   [Milvus Announce](https://lists.lfai.foundation/g/milvus-announce)
+
+## Members
+- All contributors [milvus readme](https://github.com/milvus-io/milvus)
+- All committers [committers](https://github.com/milvus-io/milvus/blob/master/COMMITTERS)
+- All maintainers [maintainers](https://github.com/milvus-io/milvus/blob/master/MAINTAINERS)