anchor.diff:  
   === Maven Repository
   
  -At the moment the plugin SDK is not yet available in Maven central. To develop your own plugins, use the following repository:
  -
  -[source,xml]
  -----
  -        <repository>
  -            <id>repository.hivemq.com</id>
  -            <name>HiveMQ Repository</name>
  -            <url>http://repository.hivemq.com:8081/nexus/content/groups/public/</url>
  -            <releases>
  -                <enabled>true</enabled>
  -            </releases>
  -            <snapshots>
  -                <enabled>true</enabled>
  -            </snapshots>
  -        </repository>
  -    </repositories>
  -
  -----
  +*Since version 2.0.0, the _hivemq-spi_ is available in Maven central, so no special configuration is needed*.
   
   
   === Using the SDK
  
positive.code: :hivemq-github-link: https://github.com/hivemq
  :hivemq-link: http://www.hivemq.com
  :hivemq-plugin-docu-link: http://www.hivemq.com/docs/plugins/latest
  
  == HiveMQ SDK
  
  image:https://travis-ci.org/hivemq/hivemq-spi.png?branch=master["Build Status", link="https://travis-ci.org/hivemq/hivemq-spi"]
  
  Since version 1.4, HiveMQ offers this free and open source plugin SDK with service provider interfaces. This allows everyone to extend HiveMQ and add custom functionality via plugins.
  
  With custom HiveMQ plugins, it's easy to add functionality like writing messages to databases, integrate with other service buses, collect statistics, add fine-grained security and virtually anything you else you can imagine.
  
  
negative.code: === Plugin Development Documentation
  
  Please visit {hivemq-plugin-docu-link}[our website] for the documentation how to develop plugins.
  
  === Example plugins
  
  Many example plugins are available, most of them as open source. You can find an overview of officially supported plugins {hivemq-plugin-directory}[here]:
  
  You can find many example plugins by browsing {hivemq-github-link}[here on Github].
  