Run CI against ruby 2.3 as well

rwz · rwz · commit 83fccc591adc · 2015-12-26T23:46:16.000-08:00
diff --git a/.travis.yml b/.travis.yml
@@ -8,6 +8,7 @@ rvm:
   - 2.0
   - 2.1
   - 2.2
+  - 2.3
   - ruby-head
   - jruby-19mode
   - rbx
