.travis.yml in fresh_connection-0.4.4 vs .travis.yml in fresh_connection-1.0.0

@@ -1,13 +1,18 @@
 language: ruby
+before_install:
+  - gem install bundler
 before_script:
   - mysql -e 'create database fresh_connection_test;'
   - mysql -e 'create database fresh_connection_test_master;'
   - mysql -e 'create database fresh_connection_test_slave;'
+  - bundle update
+cache: bundler
 rvm:
   - 2.0.0
-  - 2.1
-  - 2.2
+  - 2.1.8
+  - 2.2.4
+  - 2.3.0
   - ruby-head
 gemfile:
   - gemfiles/rails3.gemfile
   - gemfiles/rails40.gemfile
   - gemfiles/rails41.gemfile