[CI] Test against Ruby 2.5

nicolasleger · web-flow · commit dc35cba91f4d · 2018-03-24T19:54:05.000+01:00
diff --git a/.travis.yml b/.travis.yml
@@ -5,6 +5,7 @@ rvm:
   - 2.2
   - 2.3
   - 2.4
+  - 2.5
 
 before_install:
   - gem install bundler --no-document
