.travis.yml in rancher-api-0.4.0 vs .travis.yml in rancher-api-0.5.0

@@ -1,4 +1,4 @@
 language: ruby
 rvm:
-  - 2.2.2
-before_install: gem install bundler -v 1.10.5
+  - 2.2.5
+before_install: gem install bundler -v 1.12.5