.travis.yml in pupper-0.1.7 vs .travis.yml in pupper-0.1.8

@@ -1,5 +1,8 @@
 sudo: false
 language: ruby
 rvm:
   - 2.4.0
-before_install: gem install bundler -v 1.14.3
+before_install:
+  - gem install bundler -v 1.14.3
+script:
+  - bundle exec rspec