installing node before use on travis

Author: marcusvmsa

.travis.yml

@@ -4,7 +4,8 @@ rvm:
   - 2.2.3
 install:
   - bundle install
-  - nvm use 5.0.0
+  - nvm install 5.0
+  - nvm use 5.0
   - npm install -g npm
   - npm install
   - cd client && npm run build:client