.travis.yml in by_star-2.2.1 vs .travis.yml in by_star-3.0.0

@@ -1,35 +1,61 @@
-before_script:
-  - "mysql -e 'create database by_star_test;'"
-  - "psql -c 'create database by_star_test;' -U postgres"
-
-env:
-  - DB=sqlite
-  - DB=mysql
-  - DB=postgres
-  - DB=mongodb
-  - ACTIVE_RECORD_VERSION=4.0.0 MONGOID_VERSION=master DB=sqlite
-  - ACTIVE_RECORD_VERSION=4.0.0 MONGOID_VERSION=master DB=mysql
-  - ACTIVE_RECORD_VERSION=4.0.0 MONGOID_VERSION=master DB=postgres
-  - ACTIVE_RECORD_VERSION=4.0.0 MONGOID_VERSION=master DB=mongodb
-
-notifications:
-  email:
-    - [e-mail]
-
-branches:
-  only:
-    - master
-
-rvm:
-  - 1.9.3
-  - 2.0.0
-  - 2.1.0
-  - rbx
-  - jruby
-
-matrix:
-  allow_failures:
-    - rvm: rbx
-    - rvm: jruby
-
-services: mongodb
+before_install:
+  - gem update --system
+  - gem update bundler
+
+before_script:
+  - "mysql -e 'create database by_star_test;'"
+  - "psql -c 'create database by_star_test;' -U postgres"
+
+env:
+  - DB=sqlite
+  - DB=mysql
+  - DB=postgres
+  - DB=mongodb
+
+gemfile:
+  - spec/gemfiles/Gemfile.rails40
+  - spec/gemfiles/Gemfile.rails41
+  - spec/gemfiles/Gemfile.rails42
+  - spec/gemfiles/Gemfile.rails50
+  - spec/gemfiles/Gemfile.rails51
+  - spec/gemfiles/Gemfile.master
+
+notifications:
+  email:
+    - [e-mail]
+
+branches:
+  only:
+    - master
+
+rvm:
+  - 2.0.0
+  - 2.1.9
+  - 2.2.5
+  - 2.3.1
+  - 2.4.2
+  - 2.5.0
+
+matrix:
+  exclude:
+  - rvm: 2.0.0
+    gemfile: "spec/gemfiles/Gemfile.rails50"
+  - rvm: 2.0.0
+    gemfile: "spec/gemfiles/Gemfile.rails51"
+  - rvm: 2.1.9
+    gemfile: "spec/gemfiles/Gemfile.rails50"
+  - rvm: 2.1.9
+    gemfile: "spec/gemfiles/Gemfile.rails51"
+  - rvm: 2.4.2
+    gemfile: "spec/gemfiles/Gemfile.rails40"
+  - rvm: 2.5.0
+    gemfile: "spec/gemfiles/Gemfile.rails40"
+  - rvm: 2.4.2
+    gemfile: "spec/gemfiles/Gemfile.rails41"
+  - rvm: 2.5.0
+    gemfile: "spec/gemfiles/Gemfile.rails41"
+  allow_failures:
+    - gemfile: spec/gemfiles/Gemfile.master
+
+
+services: mongodb