Add Buildstash to DevOps/Infra section

Author: r0bbie

readme.md

@@ -82,6 +82,7 @@ Inspired by [awesome](https://github.com/sindresorhus/awesome).
 * [Jenkins](https://www.jenkins.io/) - Open-source automation server.
 * [Ansible](https://www.ansible.com/) - Configuration management and automation tool.
 * [DeployHQ](https://www.deployhq.com/) - Modern, web-based deployment platform.
+* [Buildstash](https://buildstash.com/) - Binary and release management platform for built software.
 
 ## APIs & Backends