Update travis and rubocop to work together

.gitignore

@@ -28,4 +28,3 @@ pickle-email-*.html
 /bundle
 /doc/app
 .ruby-version
-rubocop.yml

.rubocop.yml

@@ -85,4 +85,5 @@ AllCops:
     - '**/Rakefile'
     - '**/config.ru'
   Exclude:
-    - db/schema.rb
+    - 'db/schema.rb'
+    - 'vendor/bundle/**/*'

.travis.yml

@@ -16,5 +16,5 @@ before_script:
   - cp config/secrets.yml.example config/secrets.yml
   - RAILS_ENV=test bundle exec rake db:migrate --trace
 script:
-  - bundle exec rspec --color --format documentation
-  - bundle exec rubocop -Dc .rubocop.yml
+  - 'bundle exec rspec --color --format documentation'
+  - 'bundle exec rubocop -Dc .rubocop.yml'