Merge branch 'master' of https://github.com/52North/iceland

* 'master' of https://github.com/52North/iceland:
  added maven central badge

Author: autermann

README.md

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-# 52°North Iceland [![Build Status](https://travis-ci.org/52North/iceland.svg)](https://travis-ci.org/52North/iceland)
-
+# 52°North Iceland [![Build Status](https://travis-ci.org/52North/iceland.svg)](https://travis-ci.org/52North/iceland) [![Maven Central](https://img.shields.io/maven-central/v/org.n52.iceland/iceland.svg)](https://search.maven.org/#search|gav|1|g:org.n52.iceland%20AND%20a:iceland)
 Iceland is a service framework that enables the development of OGC RPC based services. It features bindings for KVP, POX, SOAP, as well as JSON-based bindings, and facilitates the rapid development of modular services that are easily configured using  [Faroe](https://github.com/52North/faroe). [Svalbard](https://github.com/52North/svalbard) is used for request parsing and response generation.
 
 The 52°North Iceland was previously developed in the the [52°North SOS 4.x](https://github.com/52North/SOS) and was then extracted into an own project to be used in other projects.