Update README.md

add other badges

README.md

@@ -1,5 +1,8 @@
 # strangefx 
 [![Build](https://github.com/redfx-quantum/strangefx/actions/workflows/build.yml/badge.svg)](https://github.com/redfx-quantum/strangefx/actions/workflows/build.yml)
+[![Maven Central](https://img.shields.io/maven-central/v/org.redfx/strangefx)](https://search.maven.org/#search|ga|1|org.redfx.strangefx)
+[![License](https://img.shields.io/github/license/redfx-quantum/strangefx)](https://opensource.org/licenses/GPL-3.0)
+[![javadoc](https://javadoc.io/badge2/org.redfx/strangefx/javadoc.svg)](https://javadoc.io/doc/org.redfx/strangefx)
 
 StrangeFX is a Java(FX) based Quantum computer visual editor.
 It leverages the Quantum computer simulator software exported by the [Strange](https://github.com/redfx-quantum/strange) project.