.travis.yml in ikazuchi-0.1.7 vs .travis.yml in ikazuchi-1.0.0

@@ -1,8 +1,9 @@
 language: ruby
+sudo: false
+cache: bundler
 rvm:
-  - 2.0.0
-  - 2.1.3
-  - 2.2.2
+  - 2.2.5
+  - 2.3.1
 script:
-  - bundle exec rake spec
   - bundle exec rubocop
+  - bundle exec rake spec