settings.xml

<?xml version="1.0" encoding="UTF-8"?>
<settings xmlns="http://maven.apache.org/SETTINGS/1.0.0"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.0.0 http://maven.apache.org/xsd/settings-1.0.0.xsd">

	<servers>

		<!-- Local Nexus - for testing: -->
		<server>
			<id>localhost-nexus-snapshots</id>
			<username>deployment</username>
			<password>deployment123</password>
		</server>
		<server>
			<id>localhost-nexus-staging</id>
			<username>deployment</username>
			<password>deployment123</password>
		</server>

		<!-- Sonatype Nexus - the real thing: -->
		<server>
			<id>sonatype-nexus-snapshots</id>
			<username>username</username>
			<password>password</password>
		</server>
		<server>
			<id>sonatype-nexus-staging</id>
			<username>username</username>
			<password>password</password>
		</server>

	</servers>

	<!-- If opt to have you key passphrase automatically passed to the build, uncomment this section: -->
<!-- 	<profiles>
		<profile>
			<id>sign</id>
			<activation>
	 			<property>
					<name>performRelease</name>
					<value>true</value>
				</property>
			</activation>
 			<properties>
				<gpg.passphrase>NB this is where you want to encrypt your passphrase. 
					See http://maven.apache.org/guides/mini/guide-encryption.html</gpg.passphrase>		
			</properties>
		</profile>
	</profiles>
 -->
</settings>