Add automated SNAPSHOT deployment with Travis CI

.travis.yml

@@ -6,3 +6,7 @@ language: java
 cache:
   directories:
     - $HOME/.m2
+script:
+  - echo '<settings><servers><server><id>sonatype-nexus-snapshots</id><username>${env.CI_DEPLOY_USERNAME}</username><password>${env.CI_DEPLOY_PASSWORD}</password></server></servers></settings>' > $HOME/settings.xml
+  - [ "$TRAVIS_PULL_REQUEST" == "false" ] && export MAVEN_PHASE=deploy || export MAVEN_PHASE=install
+  - mvn $MAVEN_PHASE -B -U -s $HOME/settings.xml

pom.xml

@@ -96,6 +96,21 @@
     </dependency>
   </dependencies>
 
+  <repositories>
+    <repository>
+      <id>sonatype-nexus-snapshots</id>
+      <name>Sonatype Nexus Snapshots</name>
+      <url>https://oss.sonatype.org/content/repositories/snapshots</url>
+      <releases>
+        <enabled>false</enabled>
+      </releases>
+      <snapshots>
+        <enabled>true</enabled>
+        <updatePolicy>never</updatePolicy>
+      </snapshots>
+    </repository>
+  </repositories>
+
   <build>
     <finalName>${project.artifactId}</finalName>
     <plugins>