.travis.yml in csv-importer-0.3.0 vs .travis.yml in csv-importer-0.3.1

@@ -1,6 +1,6 @@
 language: ruby
 rvm:
-  - 2.2.2
+  - 2.3.0
 addons:
   code_climate:
     repo_token: 0e005c563813539e6d0cdca9a3e95b3c0f1c79f32284f8eaa93b54c57303d427