Update README.md
add httpretry to awesome go
@@ -1321,6 +1321,7 @@ See [go-hardware](https://github.com/rakyll/go-hardware) for a comprehensive lis
* [gentleman](https://github.com/h2non/gentleman) - Full-featured plugin-driven HTTP client library.
* [grequests](https://github.com/levigross/grequests) - A Go "clone" of the great and famous Requests library.
* [heimdall](https://github.com/gojektech/heimdall) - An enchanced http client with retry and hystrix capabilities.
+* [httpretry](https://github.com/ybbus/httpretry) - Enriches the default go HTTP client with retry functionality.
* [pester](https://github.com/sethgrid/pester) - Go HTTP client calls with retries, backoff, and concurrency.
* [resty](https://github.com/go-resty/resty) - Simple HTTP and REST client for Go inspired by Ruby rest-client.
* [rq](https://github.com/ddo/rq) - A nicer interface for golang stdlib HTTP client.
