Merge pull request #215 from niftylettuce/patch-1

Fix travis.yml (trusty > xenial)

Author: eriwen

.travis.yml

@@ -1,6 +1,6 @@
 language: node_js
 sudo: required
-dist: trusty
+dist: xenial
 node_js:
   - 8
 addons:
@@ -11,10 +11,11 @@ addons:
     - google-chrome
     packages:
     - google-chrome-stable
+services:
+  - xvfb
 before_install:
 - export CHROME_BIN=chromium-browser
 - export DISPLAY=:99.0
-- sh -e /etc/init.d/xvfb start
 before_script:
 - npm install
 script: