.travis.yml in asset_cloud-2.2.1 vs .travis.yml in asset_cloud-2.2.2

@@ -1,5 +1,7 @@
 language: ruby
+before_install:
+  - gem install bundler
 rvm:
   - '1.9.3'
   - '2.0'
   - '2.1'
   - 2.1.2