Bump up ruby versions for Travis

rwz · rwz · commit 7a846a8b4229 · 2016-07-20T15:50:11.000-07:00
diff --git a/.travis.yml b/.travis.yml
@@ -7,8 +7,8 @@ rvm:
   - 1.9
   - 2.0
   - 2.1
-  - 2.2.4
-  - 2.3.0
+  - 2.2.5
+  - 2.3.1
   - ruby-head
   - jruby-19mode
   - rbx
