.travis.yml in hcheck-0.1.0 vs .travis.yml in hcheck-0.1.1

@@ -1,5 +1,12 @@
 sudo: false
 language: ruby
 rvm:
-  - 2.4.2
-before_install: gem install bundler -v 1.16.1
+  - 2.4.4
+  - 2.5.1
+cache: bundler
+branches:
+  only:
+  - master
+script:
+  - bundle exec rake
+  - bundle exec rubocop --parallel