Merge pull request #145 from bgentry/patch-1

Add River

README.md

@@ -64,6 +64,7 @@ A curated list of awesome open source workflow engines
 * [Plynx](https://plynx.com) [![Stars](https://img.shields.io/github/stars/plynx-team/plynx.svg)](https://github.com/plynx-team/plynx) - Interactive platform with drag and drop interface for building and deploying portable and scalable end-to-end data driven workflows.
 * [Popper](https://github.com/systemslab/popper) [![Stars](https://img.shields.io/github/stars/systemslab/popper.svg)](https://github.com/systemslab/popper)  - Lightweight, YAML based container-native workflow engine supporting Docker, Singularity, Vagrant VMs with Docker daemon in VM, and local host.
 * [Prefect](https://github.com/PrefectHQ/prefect) [![Stars](https://img.shields.io/github/stars/PrefectHQ/prefect.svg)](https://github.com/PrefectHQ/prefect)  - Prefect is a new workflow management system, designed for modern infrastructure and powered by the open-source Prefect Core workflow engine
+* [River Pro](https://riverqueue.com/pro) [![Stars](https://img.shields.io/github/stars/riverqueue/river.svg)](https://github.com/riverqueue/river) - Postgres-backed workflow engine and web dashboard for the River background queue, written in Go.
 * [RunDeck](http://rundeck.org/) [![Stars](https://img.shields.io/github/stars/rundeck/rundeck.svg)](https://github.com/rundeck/rundeck) - Job Scheduler and Runbook Automation.
 * [Snakemake](https://snakemake.github.io) [![Stars](https://img.shields.io/github/stars/snakemake/snakemake.svg)](https://github.com/snakemake/snakemake) - Workflow management system to create reproducible and scalable data analyses; python-based inspired by GNU `Make`.
 * [StackStorm](https://stackstorm.com/) [![Stars](https://img.shields.io/github/stars/stackstorm/st2.svg)](https://github.com/StackStorm/st2) - Robust Automation Engine providing Sensors, Triggers, Rules, Workflows, and Actions. StackStorm is how you "glue" your applications together.