.travis.yml in trice-0.3.1 vs .travis.yml in trice-0.3.2

@@ -4,11 +4,13 @@
   - 2.2.7
   - 2.3.4
   - 2.4.1
   - ruby-head
 gemfile:
-  - gemfiles/as4.gemfile
-  - gemfiles/as5.gemfile
+  - gemfiles/rails_4_2.gemfile
+  - gemfiles/rails_5_0.gemfile
+  - gemfiles/rails_5_1.gemfile
+  - gemfiles/rails_5_2.gemfile
 matrix:
   allow_failures:
     - rvm: ruby-head
 script:
   - xvfb-run bundle exec rake