fixed #49

Author: phasenraum2010

.travis.yml

@@ -2,9 +2,12 @@ language: java
 jdk:
   - oraclejdk8
 addons:
+  postgresql: "10"
   apt:
     packages:
       - oracle-java8-installer
+      - postgresql-10
+      - postgresql-client-10
 services:
   - postgresql
 before_install:
@@ -25,3 +28,4 @@ sudo: false
 script:  ./mvnw -B -V clean install jbake:generate site site:deploy -Ptravis -Dtest=AlphaTopLevelSuiteIT
 
 
+