Migration to Travis CI's container-based infrastructure (second try). http://docs.travis-ci.com/user/migrating-from-legacy/

This time with increased heap size on maven-surefire-plugin as a workaround for travis-ci/travis-ci#3396

Author: harawata

.travis.yml

@@ -1,4 +1,5 @@
 language: java
+sudo: false
 jdk:
   - oraclejdk8
   - oraclejdk7

pom.xml

@@ -249,6 +249,7 @@
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-surefire-plugin</artifactId>
         <configuration>
+          <argLine>-Xmx1024m</argLine>
           <systemProperties>
             <property>
               <name>derby.stream.error.file</name>