Add config file for travis-ci.
diff --git a/.travis.yml b/.travis.yml
new file mode 100644
index 0000000..2b4bb70
--- /dev/null
+++ b/.travis.yml
@@ -0,0 +1,7 @@
+language: java
+jdk:
+  - oraclejdk7
+  - openjdk6
+branches:
+  only:
+    - master