travis pls

.travis.yml

@@ -1,6 +1,8 @@
 language: ruby
 
-cache: bundler
+cache:
+  bundler: true
+
 rvm:
 - 2.3.1
 notifications:
@@ -10,6 +12,7 @@ before_install:
 - openssl aes-256-cbc -K $encrypted_6059a4f451fd_key -iv $encrypted_6059a4f451fd_iv
   -in id_rsa.enc -out deploy_key -d
 - echo -e "Host zeus.ugent.be\n\tStrictHostKeyChecking no\n" >> ~/.ssh/config
+- npm install
 script:
 - bundle exec nanoc
 - bundle exec nanoc check --deploy