Cache bundle

.gitignore

@@ -6,6 +6,7 @@
 
 # Ignore bundler config.
 /.bundle
+/vendor/bundle
 
 # Ignore SimpleCov directory.
 /coverage

.rubocop.yml

@@ -6,6 +6,7 @@ AllCops:
     - 'bin/*'
     - 'db/schema.rb'
     - 'db/seeds.rb'
+    - 'vendor/bundle/**/*'
 
 # Avoid long parameter lists
 ParameterLists:

.travis.yml

@@ -1,10 +1,10 @@
 ---
-before_install: gem update bundler
 before_script: bundle exec rake db:create db:schema:load
+bundler_args: --without assets:development:production
+cache: bundler
 script:
   - bundle exec rake
   - bundle exec rubocop --rails --fail-level=refactor
-bundler_args: --without assets:development:production
 language: ruby
 rvm:
   - 2.1.2