.travis.yml in activeadmin-1.0.0.pre4 vs .travis.yml in activeadmin-1.0.0.pre5

@@ -1,46 +1,68 @@
+---
+
 language: ruby
+
 sudo: false
-install:
-  - ./script/travis_cache download_bundle
-  - gem install bundler # use the very latest Bundler
-  - bundle install --without development --path=./bundle
-  - bundle clean # delete now-outdated gems
-  - ./script/travis_cache download_app
+
+bundler_args: --without development
+
+cache: bundler
+
+before_install:
+  - PATH=$(npm bin):$PATH # needed to install phantomjs via npm
+  - if [ $(phantomjs --version) != '2.1.1' ]; then npm install phantomjs-prebuilt@2.1; fi
+  - gem update --system # use the very latest Rubygems
+  - rvm @global do gem uninstall bundler -a -x
+  - rvm @global do gem install bundler -v 1.14.3 # latest version known to work
+
+before_script:
   - bundle exec rake setup
-  - ./script/travis_cache upload
+
 script:
-  - bundle exec rake test_with_coveralls
+  - bundle exec rake test
+
 rvm:
-  - 1.9
-  - 2.3.0
-  - jruby-9.0.5.0
+  - jruby-9.1.7.0
+  - 1.9.3
+  - 2.2.6
+  - 2.3.3
+  - 2.4.0
+
+gemfile:
+  - gemfiles/rails_32.gemfile
+  - gemfiles/rails_40.gemfile
+  - gemfiles/rails_41.gemfile
+  - gemfiles/rails_42.gemfile
+  - gemfiles/rails_50.gemfile
+
 env:
-  matrix:
-    - RAILS=3.2.22
-    - RAILS=4.2.5
-    - RAILS="> 5.x"
   global:
     - JRUBY_OPTS="-J-Xmx1024m --debug"
+
 matrix:
   fast_finish: true
+
   exclude:
-    - rvm: 1.9
-      env: RAILS="> 5.x"
-  allow_failures:
-    - rvm: 2.3.0
-      env: RAILS="> 5.x"
-    - rvm: jruby-9.0.5.0
-      env: RAILS="> 5.x"
-branches:
-  only:
-    - master
-    - /\A\d-\d-stable\z/
+    - rvm: 1.9.3
+      gemfile: gemfiles/rails_50.gemfile
+
+    - rvm: 2.4.0
+      gemfile: gemfiles/rails_32.gemfile
+
+    - rvm: 2.4.0
+      gemfile: gemfiles/rails_40.gemfile
+
+    - rvm: 2.4.0
+      gemfile: gemfiles/rails_41.gemfile
+
 notifications:
   irc:
     channels:
       - irc.freenode.org#activeadmin
+
     on_success: change
     on_failure: always
     skip_join: true
+
     template:
       - "(%{branch}/%{commit} by %{author}): %{message} (%{build_url})"