update version to v1.2.0

Author: oldratlee

README.md

@@ -1,8 +1,8 @@
 Java Dns Cache Manipulator(DCM)
 =========================
 
-[![Build Status](https://travis-ci.org/alibaba/java-dns-cache-manipulator.svg?branch=master)](https://travis-ci.org/alibaba/java-dns-cache-manipulator)
-[![Coverage Status](https://coveralls.io/repos/alibaba/java-dns-cache-manipulator/badge.svg?branch=master)](https://coveralls.io/r/alibaba/java-dns-cache-manipulator?branch=master)
+[![Build Status](https://travis-ci.org/alibaba/java-dns-cache-manipulator.svg?branch=v1.2.0)](https://travis-ci.org/alibaba/java-dns-cache-manipulator)
+[![Coverage Status](https://coveralls.io/repos/alibaba/java-dns-cache-manipulator/badge.svg?branch=v1.2.0)](https://coveralls.io/r/alibaba/java-dns-cache-manipulator?branch=v1.2.0)
 [![Maven Central](https://maven-badges.herokuapp.com/maven-central/com.alibaba/dns-cache-manipulator/badge.svg)](https://maven-badges.herokuapp.com/maven-central/com.alibaba/dns-cache-manipulator/)
 [![GitHub release](https://img.shields.io/github/release/alibaba/java-dns-cache-manipulator.svg)](https://github.com/alibaba/java-dns-cache-manipulator/releases)
 [![GitHub issues](https://img.shields.io/github/issues/alibaba/java-dns-cache-manipulator.svg)](https://github.com/alibaba/java-dns-cache-manipulator/issues)

pom.xml

@@ -4,7 +4,7 @@
 
 	<groupId>com.alibaba</groupId>
 	<artifactId>dns-cache-manipulator</artifactId>
-	<version>1.2.0-SNAPSHOT</version>
+	<version>1.2.0</version>
 	<packaging>jar</packaging>
 	<name>Java Dns Cache Manipulator(DCM)</name>
 	<description>A simple 0-dependency thread-safe lib for setting dns programmatically without touching host file, make unit/integration test portable.</description>