Update travis.yml for lint

Author: mixonic

.travis.yml

@@ -1,25 +1,25 @@
+---
 language: node_js
 node_js:
-- '6'
+  - "6"
+
 notifications:
   email: false
+
+sudo: required
 dist: trusty
-sudo: false
 
 addons:
   chrome: stable
 
+cache:
+  yarn: true
+
 env:
   global:
     # See https://git.io/vdao3 for details.
     - JOBS=1
 
-cache:
-  yarn: true
-  directories:
-  - $HOME/.npm
-  - $HOME/.cache
-
 before_install:
   - curl -o- -L https://yarnpkg.com/install.sh | bash
   - export PATH=$HOME/.yarn/bin:$PATH
@@ -28,23 +28,19 @@ before_install:
   - yarn --version
 
 install:
-- yarn
-- bower install
-
-before_script:
-- export DISPLAY=:99.0
-- sh -e /etc/init.d/xvfb start
-- sleep 3 # give xvfb some time to start
+  - yarn install --non-interactive
+  - bower install
 
 script:
-- yarn test
+  - yarn lint:js
+  - yarn test
 
 after_script:
-- scripts/travis-deploy.sh
+  - scripts/travis-deploy.sh
 
 env:
   global:
-  - TORII_PROVIDER=github-oauth2
-  - secure: Dwthqo6GaXQt7erj89xMa/2GRua9PTzcSKXYmxjE0O46DMuBR80JjPges0hGCWwPcdMFqsaMshSaTVF5eHc49vhaziB2sqWwLZndkRFIAsNGnBZkBpeZc9MsTNMbPP5KyJh/pG03nJLXUSz6xzMoxDNU/QHWyBYBxTlfxVGewLE=
-  - secure: H3EtrTdcXIDOjp59Mu/7KA7N2UrVgKjt2YVtW6dqby/Oa5q/jpfnomE70fhIpFTle6MavhAIujQ5awMRC/80EJXlZp5hnSd9DKyCpk70I1KoT6vm34RjZfSP9kAyRyokLwfjEkovCFltY3/i8y+8QFEVr8RkNt1VP2hY1ScFzys=
-  - secure: BM5IGMNaE+xS16wsReX6KjA4Zg9nKhWrPuc7AZAmgEevCiQT6mgSfyhyoPoRS/M5UVdngqCSHFljfUHigR9/C8lPOY7fS6RU4wyNnZlQJL6y3D3LMWvzw8u/Rc98rmoWqNA2XEmc4a95A8iRNATWQAd3qL0FxfNcv6ny99MOER4=
+    - TORII_PROVIDER=github-oauth2
+    - secure: Dwthqo6GaXQt7erj89xMa/2GRua9PTzcSKXYmxjE0O46DMuBR80JjPges0hGCWwPcdMFqsaMshSaTVF5eHc49vhaziB2sqWwLZndkRFIAsNGnBZkBpeZc9MsTNMbPP5KyJh/pG03nJLXUSz6xzMoxDNU/QHWyBYBxTlfxVGewLE=
+    - secure: H3EtrTdcXIDOjp59Mu/7KA7N2UrVgKjt2YVtW6dqby/Oa5q/jpfnomE70fhIpFTle6MavhAIujQ5awMRC/80EJXlZp5hnSd9DKyCpk70I1KoT6vm34RjZfSP9kAyRyokLwfjEkovCFltY3/i8y+8QFEVr8RkNt1VP2hY1ScFzys=
+    - secure: BM5IGMNaE+xS16wsReX6KjA4Zg9nKhWrPuc7AZAmgEevCiQT6mgSfyhyoPoRS/M5UVdngqCSHFljfUHigR9/C8lPOY7fS6RU4wyNnZlQJL6y3D3LMWvzw8u/Rc98rmoWqNA2XEmc4a95A8iRNATWQAd3qL0FxfNcv6ny99MOER4=