.travis.yml in hash_ext-0.1.1 vs .travis.yml in hash_ext-0.2.0

@@ -2,8 +2,9 @@
 rvm:
   - 1.9.3
   - 2.0
   - 2.1
   - 2.2
+  - 2.3.0
   - jruby
 before_install:
   - gem install bundler
\ No newline at end of file