Update README.md

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# Welcome to Milvus

 $ ./sdk_simple

```

#### Run Java example code

Make sure Java 8 or higher is already installed.

Refer to [this link](https://github.com/milvus-io/milvus-sdk-java/tree/master/examples) for example code.

## Contribution guidelines

Contributions are welcomed and greatly appreciated. If you want to contribute to Milvus, please read our [contribution guidelines](CONTRIBUTING.md). 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/new) to track issues and bugs. For general questions and public discussions, please join our community.

We use [GitHub issues](https://github.com/milvus-io/milvus/issues/new/choose) to track issues and bugs. For general questions and public discussions, please join our community.

## Join the Milvus community

[Milvus docs](https://www.milvus.io/docs/en/userguide/install_milvus/)

[Milvus bootcamp](https://github.com/milvus-io/bootcamp)

[Milvus blog](https://www.milvus.io/blog/)

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[Milvus roadmap](https://milvus.io/docs/en/roadmap/)