now uses latest java version in travis

Author: andreacalia

.travis.yml

@@ -1,4 +1,11 @@
 language: java
+jdk:
+  - oraclejdk8
+sudo: false
+addons:
+  apt:
+    packages:
+      - oracle-java8-installer
 env:
   global:
   - GH_REF: github.com/tensorics/tensorics-core.git
@@ -9,6 +16,4 @@ deploy:
   skip_cleanup: true
   script: /bin/sh ./scripts/deploy-jars.sh
   on:
-    tags: true
-jdk:
-  - oraclejdk8
+    tags: true