Add Vegeta to DevOps section

README.md

@@ -930,6 +930,7 @@ Software written in Go.
 * [ostent](https://github.com/ostrost/ostent) - collects and displays system metrics and optionally relays to Graphite and/or InfluxDB
 * [Packer](https://github.com/mitchellh/packer) - Packer is a tool for creating identical machine images for multiple platforms from a single source configuration.
 * [Rodent](https://github.com/alouche/rodent) - Rodent helps you manage Go versions, projects and track dependencies.
+* [Vegeta] (https://github.com/tsenart/vegeta) - HTTP load testing tool and library. It's over 9000!
 * [webhook](https://github.com/adnanh/webhook) - Tool which allows user to create HTTP endpoints (hooks) that execute commands on the server
 * [Wide](https://wide.b3log.org) - A Web-based IDE for Teams using Golang.