Sample Pom.xml for Maven release plugin. Created for blog https://goo.gl/y9CfVM

pom.xml

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>menuka</groupId>
    <artifactId>menukanows</artifactId>
    <packaging>war</packaging>
    <version>1.2-SNAPSHOT</version>
    <name>menukanows Maven Webapp</name>
    <url>http://maven.apache.org</url>
    <dependencies>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>3.8.1</version>
            <scope>test</scope>
        </dependency>

        <dependency>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-release-plugin</artifactId>
            <version>2.5.3</version>
        </dependency>
    </dependencies>

    <properties>
        <project.scm.id>githubcredentials</project.scm.id>
    </properties>
    <scm>
        <developerConnection>scm:git:https://github.com/Menuka5/MavenPluginTest.git</developerConnection>
        <tag>HEAD</tag>
    </scm>
    <build>
        <finalName>menukanows</finalName>

        <pluginManagement>
            <plugins>
                <plugin>
                    <groupId>org.apache.maven.plugins</groupId>
                    <artifactId>maven-release-plugin</artifactId>
                    <version>2.5.3</version>
                    <configuration>
                        <checkModificationExcludes>
                            <checkModificationExclude>pom.xml</checkModificationExclude>
                        </checkModificationExcludes>
                    </configuration>
                </plugin>
            </plugins>
        </pluginManagement>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.3</version>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                </configuration>
            </plugin>

        </plugins>
    </build>
</project>