add retry to Utilities section
@@ -1166,6 +1166,7 @@ See [go-hardware](https://github.com/rakyll/go-hardware) for a comprehensive lis
* [rerate](https://github.com/abo/rerate) - Redis-based rate counter and rate limiter for Go.
* [rerun](https://github.com/ivpusic/rerun) - Recompiling and rerunning go apps when source changes.
* [resty](https://github.com/go-resty/resty) - Simple HTTP and REST client for Go inspired by Ruby rest-client.
+* [retry](https://github.com/kamilsk/retry) - Functional mechanism based on context to perform actions repetitively until successful.
* [robustly](https://github.com/VividCortex/robustly) - Runs functions resiliently, catching and restarting panics.
* [scheduler](https://github.com/carlescere/scheduler) - Cronjobs scheduling made easy.
* [sling](https://github.com/dghubble/sling) - Go HTTP requests builder for API clients.
