.travis.yml in mikoshi-0.1.5 vs .travis.yml in mikoshi-0.2.0

@@ -1,10 +1,11 @@
 notifications:
   email: false
 sudo: false
 language: ruby
 rvm:
-  - 2.2.7
   - 2.3.4
   - 2.4.1
   - ruby-head
 before_install: gem install bundler -v 1.14.3
+script:
+  - bundle exec rspec