220: Fix problem with maven-javadoc-plugin

Task-Url: #220

Author: keilw

README.md

@@ -1,6 +1,6 @@
 unit-api
 ========
-[ ![Download](https://api.bintray.com/packages/unitsofmeasurement/maven/javax.measure%3Aunit-api/images/download.svg) ](https://bintray.com/unitsofmeasurement/maven/javax.measure%3Aunit-api/_latestVersion)
+[![Maven Central](https://maven-badges.herokuapp.com/maven-central/javax.measure/unit-api/badge.svg)](https://maven-badges.herokuapp.com/maven-central/javax.measure/unit-api)
 [![CircleCI](https://circleci.com/gh/unitsofmeasurement/unit-api/tree/master.svg?style=svg)](https://circleci.com/gh/unitsofmeasurement/unit-api/tree/master)
 [![Codacy Badge](https://api.codacy.com/project/badge/Grade/84af6bb532464d4ba65e17625ecdd0d6)](https://www.codacy.com/app/unitsofmeasurement/unit-api?utm_source=github.com&utm_medium=referral&utm_content=unitsofmeasurement/unit-api&utm_campaign=badger)
 [![Coverage Status](https://coveralls.io/repos/github/unitsofmeasurement/unit-api/badge.svg)](https://coveralls.io/github/unitsofmeasurement/unit-api)

pom.xml

@@ -4,7 +4,7 @@
 	<modelVersion>4.0.0</modelVersion>
 	<groupId>javax.measure</groupId>
 	<artifactId>unit-api</artifactId>
-	<version>2.1.2-SNAPSHOT</version>
+	<version>2.1.2</version>
 	<name>Units of Measurement API</name>
 	<packaging>bundle</packaging>
 	<url>http://unitsofmeasurement.github.io/unit-api/</url>