Ruby 2.4.0 on Travis CI

Author: nalabjp

.travis.yml

@@ -12,6 +12,8 @@ deploy:
   run:
       - "bundle exec rails db:migrate"
       - "bundle exec rails dojos:update_db_by_yaml"
+rvm:
+  - 2.4.0
 script:
   - RAILS_ENV=test bundle exec rake db:migrate --trace
   - bundle exec rake