Add travis config

.travis.yml

@@ -0,0 +1,16 @@
+language: java
+os: linux
+sudo: false
+
+before_install:
+  - chmod +x gradlew
+  - chmod +x gradle/wrapper/gradle-wrapper.jar
+
+before_cache:
+  - rm -f  $HOME/.gradle/caches/modules-2/modules-2.lock
+  - rm -fr $HOME/.gradle/caches/*/plugin-resolution/
+
+cache:
+  directories:
+    - $HOME/.gradle/caches/
+    - $HOME/.gradle/wrapper/