Add travis build

.settings.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<settings>
+  <servers>
+	<server>
+	  <id>repo.spring.io</id>
+	  <username>${env.CI_DEPLOY_USERNAME}</username>
+	  <password>${env.CI_DEPLOY_PASSWORD}</password>
+	</server>
+  </servers>
+</settings>

.travis.yml

@@ -0,0 +1,7 @@
+language: java
+install: mvn install -q -U -DskipTests=true -Dmaven.test.redirectTestOutputToFile=true
+script: mvn --settings .settings.xml deploy -q -nsu -Dmaven.test.redirectTestOutputToFile=true
+env:
+  global:
+  - secure: JXDn4awZAYbhxPV9PIn0I+wUv+PwLJ5TLWFVW2q9rQqeJVDJd3KB0WRXSFOi03g/rGFbN0j+JCqgJPW/I91yEwC55AWbr2DG9fB7HuyQe6OKNT7qZkmoDxrfkYhaN7OLwcNf7vP4kXwzKqIbmSLfsrF1M/aVAPdXw9u6TPL+9i0=
+  - secure: cwftjc6405DztK+P2oJYsxSZWYqozsAWPaLPzuqq/1bTjp+3WAPkV+/OGWiZDW7Exd/z958McQMSONIab/CgLvfenrYc38ErjKstdovyduYs905aVitlUk19dOiH35qJgeFl9+6zNWIOB4OysWsBmdnmtbk1avM/v/Ove3bJvcE=