update readme

README.md

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-# nationalize
+[![Go Report](https://goreportcard.com/badge/github.com/masonkmeyer/nationalize)](https://goreportcard.com/badge/github.com/masonkmeyer/nationalize)
+![Build](https://github.com/masonkmeyer/nationalize/actions/workflows/build.yml/badge.svg)
+
+# Nationalize
+
+Nationalize is a go client for the [nationalize.io](https://nationalize.io/) API.
+
+
+ ## Examples
+
+ You can use this library to call the API client. 
+
+ ```golang
+client := nationalize.NewClient()
+prediction, rateLimit, err := client.Predict("michael")
+ ```
+
+This client also supports batch predictions.