Add initial Travis integration

Author: realityforge

.travis.yml

@@ -0,0 +1,13 @@
+language: ruby
+jdk:
+- oraclejdk8
+sudo: false
+rvm:
+- 2.3.1
+install:
+- rvm use 2.3.1
+- gem install bundler
+- bundle install
+script: buildr package publish_if_tagged
+git:
+  depth: false