Add Travis CI

Author: davispuh

.travis.yml

@@ -0,0 +1,21 @@
+language: ruby
+rvm:
+  - 2.0.0
+  - 1.9.3
+  - jruby-19mode
+  - rbx-19mode
+  - ruby-head
+  - jruby-head
+jdk:
+  - oraclejdk7
+  - openjdk7
+matrix:
+  exclude:
+    - rvm: 2.0.0
+      jdk: openjdk7
+    - rvm: 1.9.3
+      jdk: openjdk7
+    - rvm: rbx-19mode
+      jdk: openjdk7
+    - rvm: ruby-head
+      jdk: openjdk7