Add Travis-CI

.travis.yml

@@ -0,0 +1,19 @@
+language: java
+notifications:
+  email: false
+before_install: chmod +x gradlew
+install: ./gradlew setupCIWorkspace -s
+script: ./gradlew build -s
+jdk:
+  - oraclejdk8
+
+# Caching for Gradle files, prevents hitting Maven too much.
+before_cache:
+  - find $HOME/.gradle/ -name '*.lock' -print -exec rm -f {} \;
+cache:
+  directories:
+    - $HOME/.gradle/caches/
+    - $HOME/.gradle/wrapper/
+
+# Faster builds without sudo.
+sudo: false