.travis.yml in fluent-plugin-geoip-0.5.1 vs .travis.yml in fluent-plugin-geoip-0.6.0

@@ -1,9 +1,20 @@
+sudo: required
 language: ruby
 
 rvm:
+  - 2.3.0
+  - 2.2
   - 2.1
   - 2.0.0
   - 1.9.3
 
 before_install:
+  - sudo apt-get update
   - sudo apt-get install libgeoip-dev
+  - gem update bundler
+
+gemfile:
+  - Gemfile
+  - gemfiles/fluentd_v0.10.gemfile
+  - gemfiles/fluentd_v0.12.gemfile
+