Added Suet (#1158)

* Added Suet

* Added Suet

* fix suet entry formatting

README.md

@@ -108,6 +108,7 @@ _Web Analytics_
   * [Rakam](https://rakam.io/) - Custom analytics platform that allows you to create your own analytics services. Integrate with any data source (web, mobile, IoT etc.), analyze data with SQL and create dashboards. ([Source Code](https://github.com/rakam-io/rakam)) `Apache` `Java`
   * [Serposcope](https://serposcope.serphacker.com/) - Serposcope is a free and open-source rank tracker to monitor websites ranking in Google and improve your SEO performances. ([Source Code](https://github.com/serphacker/serposcope)) `MIT` `Java`
   * [Snowplow](http://snowplowanalytics.com/) - Have every single event, from your websites, mobile apps, desktop applications and server-side systems, stored in your own data warehouse and available to action in real-time. ([Source Code](https://github.com/snowplow/)) `Apache` `Scala`
+  * [Suet](https://suet.co/) `⚠` - Detailed analytics and reporting for your Mailgun transactional emails. ([Source Code](https://github.com/kehers/suet)) `GPLv3` `Nodejs`
 
 _Business Intelligence_