.travis.yml in rflow-1.0.1 vs .travis.yml in rflow-1.1.0

@@ -2,17 +2,20 @@
 
 rvm:
   - 1.9.3
   - 2.0.0
   - 2.1.0
+  - 2.2.0
+  - 2.3.0
 
 before_install:
   - sudo apt-get install libtool autoconf automake uuid-dev build-essential
   - wget http://download.zeromq.org/zeromq-3.2.4.tar.gz && tar zxvf zeromq-3.2.4.tar.gz && cd zeromq-3.2.4 && ./configure && make && sudo make install && cd ..
 # Only has 4.0.4, need 3.2 version due to old em-zeromq
 #  - sudo add-apt-repository -y ppa:chris-lea/zeromq
 #  - sudo apt-get update
 #  - sudo apt-get install libzmq3 libzmq3-dev
+  - gem update bundler
 
 script: bundle exec rspec spec
 
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