Merge pull request #6 from avaje/feature/add-builds

Add initial badges into README

Author: rbygrave

README.md

@@ -1,2 +1,6 @@
+[![Build](https://github.com/avaje/avaje-oauth2/actions/workflows/build.yml/badge.svg)](https://github.com/avaje/avaje-oauth2/actions/workflows/build.yml)
+[![avaje-oauth2 EA](https://github.com/avaje/avaje-oauth2/actions/workflows/jdk-ea.yml/badge.svg)](https://github.com/avaje/avaje-oauth2/actions/workflows/jdk-ea.yml)
+[![Maven Central](https://img.shields.io/maven-central/v/io.avaje/avaje-oauth2-core.svg?label=Maven%20Central)](https://mvnrepository.com/artifact/io.avaje/avaje-oauth2-core)
+
 # avaje-oauth2
 OAuth2 libraries