.travis.yml in percy-capybara-2.4.0 vs .travis.yml in percy-capybara-2.4.1

@@ -8,7 +8,10 @@
   - ruby-head
 matrix:
   allow_failures:
   - rvm: ruby-head
 before_install:
+  - gem update --system
   - gem update bundler
-script: xvfb-run bundle exec rspec
+script:
+  - xvfb-run bundle exec rspec
+  - bundle exec rubocop -D