.travis.yml in howitzer-2.0.1 vs .travis.yml in howitzer-2.0.2

- old
+ new

@@ -1,6 +1,7 @@ language: ruby before_install: - gem install bundler -rvm: - - 2.2.5 - - 2.3.1 +rvm: + - 2.2.6 + - 2.3.3 + - 2.4.0