Migrate to use Xenial in Travis

.travis.yml

@@ -1,32 +1,32 @@
 language: node_js
 node_js: '6'
 sudo: required
-dist: trusty
+dist: xenial
 addons:
   firefox: 52.3.0
   postgresql: '9.4'
   apt:
     packages:
-    - dbus-x11
+      - dbus-x11
 install:
-- npm install
-before_install:
-- export DISPLAY=:99.0
-- sh -e /etc/init.d/xvfb start
-- psql -c 'create database bitballs;' -U postgres
+  - npm install
 before_deploy:
-- git config --global user.email "[email protected]"
-- git config --global user.name "bitballs deploy bot"
-- node public/build
-- git add public/dist/ --force
-- git commit -m "Updating build."
-- npm run deploy:ci
+  - git config --global user.email "[email protected]"
+  - git config --global user.name "bitballs deploy bot"
+  - node public/build
+  - git add public/dist/ --force
+  - git commit -m "Updating build."
+  - 'npm run deploy:ci'
 deploy:
   skip_cleanup: true
   provider: heroku
   app: bitballs
   api_key:
-    secure: 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
+    secure: >-
+      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
 env:
   global:
-    secure: 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
+    secure: >-
+      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
+services:
+  - xvfb