.travis.yml in useragent_api-0.1.2 vs .travis.yml in useragent_api-0.1.3

@@ -1,9 +1,10 @@
 sudo: false
 language: ruby
 rvm:
-  - 2.2.9
-  - 2.3.6
-  - 2.4.3
-  - 2.5.0
+  - 2.5.1
+  - 2.4.4
+  - 2.3.7
 before_install: gem install bundler -v 1.16.1
-before_script: bundle exec rubocop
+before_script:
+  - ./bin/validate-target-ruby-version.rb
+  - bundle exec rubocop