Merge pull request #301 from hainesr/update-travis

Update travis config

.travis.yml

@@ -3,19 +3,25 @@ sudo: false
 cache: bundler
 rvm:
   - 2.0.0
-  - 2.1.5
-  - 2.2.0
+  - 2.1.9
+  - 2.2.5
+  - 2.3.1
   - ruby-head
   - rbx-2
 matrix:
   include:
-  - rvm: jruby-1.7.17-19mode
+  - rvm: jruby-9.1.4.0
     jdk: oraclejdk7
-  - rvm: jruby-1.7.17-19mode
+  - rvm: jruby-9.1.4.0
+    jdk: oraclejdk8
+  - rvm: jruby-9.1.4.0
     jdk: openjdk7
+  - rvm: jruby-head
+    jdk: oraclejdk8
   allow_failures:
     - rvm: ruby-head
     - rvm: rbx-2
+    - rvm: jruby-head
 before_install:
   - gem update --system
   - gem install bundler