Update README.md

Author: vojtapol

README.md

@@ -1,5 +1,11 @@
-# [GraphQL Kickstart Documentation](https://www.graphql-java-kickstart.com/tools/)
+# [GraphQL Java Kickstart Documentation](https://www.graphql-java-kickstart.com/)
 [![Build Status](https://travis-ci.org/graphql-java-kickstart/documentation.svg?branch=master)](https://travis-ci.org/graphql-java-kickstart/documentation)
+[![Chat on Spectrum](https://img.shields.io/badge/spectrum-join%20the%20community-%23800080)](https://spectrum.chat/graphql-java-kick/tools)
+
+## We are looking for contributors!
+Are you interested in improving our documentation, working on the codebase, reviewing PRs?
+
+[Reach out to us on Spectrum](https://spectrum.chat/graphql-java-kick/tools) and join the team!
 
 ## Running the site locally
 1. Clone this repository