docs: update README.md [skip ci]

Author: allcontributors[bot]

README.md

@@ -1,4 +1,7 @@
 # AWS SDK for Java 2.0
+<!-- ALL-CONTRIBUTORS-BADGE:START - Do not remove or modify this section -->
+[![All Contributors](https://img.shields.io/badge/all_contributors-1-orange.svg?style=flat-square)](#contributors-)
+<!-- ALL-CONTRIBUTORS-BADGE:END -->
 [![Build Status](https://travis-ci.com/aws/aws-sdk-java-v2.svg?branch=master)](https://travis-ci.com/aws/aws-sdk-java-v2) ![Build Status](https://codebuild.us-west-2.amazonaws.com/badges?uuid=eyJlbmNyeXB0ZWREYXRhIjoiTFJSRXBBN1hkU1ZEQzZ4M1hoaWlFUExuNER3WjNpVllSQ09Qam1YdFlTSDNTd3RpZzNia3F0VkJRUTBwZlQwR1BEelpSV2dWVnp4YTBCOFZKRzRUR004PSIsIml2UGFyYW1ldGVyU3BlYyI6ImdHdEp1UHhKckpDRmhmQU4iLCJtYXRlcmlhbFNldFNlcmlhbCI6MX0%3D&branch=master)
 [![Maven](https://img.shields.io/maven-central/v/software.amazon.awssdk/s3.svg?label=Maven)](https://search.maven.org/search?q=g:%22software.amazon.awssdk%22%20AND%20a:%22s3%22)
 [![Gitter](https://badges.gitter.im/aws/aws-sdk-java-v2.svg)](https://gitter.im/aws/aws-sdk-java-v2?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge) 
@@ -169,3 +172,23 @@ We need your help in making this SDK great. Please participate in the community
 [s3-integration-tests]: https://github.com/aws/aws-sdk-java-v2/tree/master/services/s3/src/it/java/software/amazon/awssdk/services/s3
 [maintenance-policy]: https://docs.aws.amazon.com/credref/latest/refdocs/maint-policy.html
 [version-matrix]: https://docs.aws.amazon.com/credref/latest/refdocs/version-support-matrix.html
+
+## Contributors ✨
+
+Thanks goes to these wonderful people ([emoji key](https://allcontributors.org/docs/en/emoji-key)):
+
+<!-- ALL-CONTRIBUTORS-LIST:START - Do not remove or modify this section -->
+<!-- prettier-ignore-start -->
+<!-- markdownlint-disable -->
+<table>
+  <tr>
+    <td align="center"><a href="https://github.com/abrooksv"><img src="https://avatars.githubusercontent.com/u/8992246?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Austin Brooks</b></sub></a><br /><a href="https://github.com/aws/aws-sdk-java-v2/commits?author=abrooksv" title="Code">💻</a></td>
+  </tr>
+</table>
+
+<!-- markdownlint-restore -->
+<!-- prettier-ignore-end -->
+
+<!-- ALL-CONTRIBUTORS-LIST:END -->
+
+This project follows the [all-contributors](https://github.com/all-contributors/all-contributors) specification. Contributions of any kind welcome!