Update the Maven Central badge to use the group id io.cucumber.

[CI SKIP]

Author: brasmusson

README.md

@@ -1,4 +1,4 @@
-[![Maven Central](https://maven-badges.herokuapp.com/maven-central/info.cukes/cucumber-jvm/badge.svg)](https://maven-badges.herokuapp.com/maven-central/info.cukes/cucumber-jvm)
+[![Maven Central](https://maven-badges.herokuapp.com/maven-central/io.cucumber/cucumber-jvm/badge.svg)](https://maven-badges.herokuapp.com/maven-central/io.cucumber/cucumber-jvm)
 [![Build Status](https://secure.travis-ci.org/cucumber/cucumber-jvm.svg)](http://travis-ci.org/cucumber/cucumber-jvm)
 [![Coverage Status](https://coveralls.io/repos/github/cucumber/cucumber-jvm/badge.svg?branch=master)](https://coveralls.io/github/cucumber/cucumber-jvm?branch=master)
 [![Join the chat at https://gitter.im/cucumber/cucumber-jvm](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/cucumber/cucumber-jvm?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)