.travis.yml in follow_system-0.1.0 vs .travis.yml in follow_system-0.1.1

@@ -1,19 +1,20 @@
 language:
   - ruby
 
 rvm:
-  - 2.2.2
   - 2.2.3
   - 2.3.0
+  - 2.4.0
+  - 2.5.0
 
 gemfile:
-  - gemfiles/rails4.1.15.gemfile
-  - gemfiles/rails4.1.16.gemfile
-  - gemfiles/rails4.2.7.gemfile
-  - gemfiles/rails4.2.7.1.gemfile
   - gemfiles/rails5.0.0.gemfile
   - gemfiles/rails5.0.0.1.gemfile
+  - gemfiles/rails5.1.0.gemfile
+  - gemfiles/rails5.1.1.gemfile
+  - gemfiles/rails5.1.2.gemfile
+  - gemfiles/rails5.2.0.gemfile
 
 install:
   - "gem install bundler"
   - "travis_retry bundle install"