.travis.yml in datacenter-0.3.1 vs .travis.yml in datacenter-0.4.0

- old
+ new

@@ -2,10 +2,12 @@
 rvm:
   - 1.9.3
   - 2.0
   - 2.1
   - 2.2
+  - 2.3.0
   - jruby
 before_install:
+  - gem install bundler
   - sudo apt-get -y install openssh-server
   - ssh-keygen -q -t rsa -N "" -f ~/.ssh/id_rsa
-  - cp $HOME/.ssh/id_rsa.pub $HOME/.ssh/authorized_keys
\ No newline at end of file
+  - cp $HOME/.ssh/id_rsa.pub $HOME/.ssh/authorized_keys