add readme tags

Author: calbera

README.md

@@ -1,10 +1,12 @@
 # go-pyth-client
 
+[![Tag](https://img.shields.io/github/tag/calbera/go-pyth-client.svg)](https://github.com/calbera/go-pyth-client/releases/)
+![License](https://img.shields.io/github/license/calbera/go-pyth-client.svg)
 [![GoDoc](https://godoc.org/github.com/calbera/go-pyth-client?status.svg)](https://godoc.org/github.com/calbera/go-pyth-client)
 ![Lint](https://github.com/calbera/go-pyth-client/workflows/golangci-lint/badge.svg)
 [![Go Report Card](https://goreportcard.com/badge/github.com/calbera/go-pyth-client)](https://goreportcard.com/report/github.com/calbera/go-pyth-client)
 
-Go client library for interacting with Pyth's [Hermes](https://hermes.pyth.network/docs/) and [Benchmarks](https://benchmarks.pyth.network/docs) API. For more information on Pyth Hermes, please visit Pyth's [documentation on price feeds](https://docs.pyth.network/price-feeds). For more information on Pyth Benchmarks, please visit Pyth's [documentation on benchmarks](https://docs.pyth.network/benchmarks).
+Go client library for interacting with Pyth [Hermes](https://hermes.pyth.network/docs/) and [Benchmarks](https://benchmarks.pyth.network/docs) APIs. For more information on Pyth Hermes, please visit Pyth's [documentation on price feeds](https://docs.pyth.network/price-feeds). For more information on Pyth Benchmarks, please visit Pyth's [documentation on benchmarks](https://docs.pyth.network/benchmarks).
 
 This project is still under development. For support on more endpoints and use cases, please open an issue or contribute!