.travis.yml in ts_routes-0.5.0 vs .travis.yml in ts_routes-0.6.0

@@ -3,15 +3,17 @@
 language: ruby
 rvm:
   - "2.3"
   - "2.4"
 
-language: node_js
-node_js:
-  - "6"
+before_install:
+  - nvm install 8
+  - npm install
 
-install:
-  - bin/setup
+cache:
+  bundler: true
+  directories:
+    - node_modules
 
 script:
   - bundle exec rake
   - bundle exec rubocop