.travis.yml in asana_exception_notifier-0.8.0 vs .travis.yml in asana_exception_notifier-1.0.0

@@ -1,17 +1,33 @@
 language: ruby
 sudo: false
+
+cache: bundler
+
+bundler_args: --no-deployment --binstubs=./bin
+
 before_install:
   - "echo 'gem: --no-ri --no-rdoc' > ~/.gemrc"
   - gem install bundler
-bundler_args: "--no-deployment"
+  - gem update bundler
+
+install:
+  - bundle install --path vendor/bundle
+
 script:
    - echo $BUNDLE_GEMFILE
    - bundle exec rake
+gemfile:
+  - gemfiles/rails_4.0.0.gemfile
+  - gemfiles/rails_4.1.1.gemfile
+  - gemfiles/rails_4.2.0.gemfile
+  - gemfiles/rails_5.0.0.gemfile
+
 rvm:
   - 2.2.2
   - 2.2.5
   - 2.3.1
   - 2.3.2
   - 2.3.3
 notifications:
   email: false
+