Make Travis run tests

.travis.yml

@@ -1,17 +1,8 @@
+dist: xenial
+services:
+  - xvfb
 language: node_js
 node_js:
-  - "stable"
-
-cache:
-  directories:
-    - node_modules
-
-# Google Chrome
-#
-# https://github.com/travis-ci/travis-ci/issues/272#issuecomment-14402117
-# http://stackoverflow.com/questions/19255976/how-to-make-travis-execute-angular-tests-on-chrome-please-set-env-variable-chr
-#
-before_install:
-  - export CHROME_BIN=chromium-browser
-  - export DISPLAY=:99.0
-  - sh -e /etc/init.d/xvfb start
+   - stable
+addons:
+  chrome: stable