Merge pull request #1138 from stealjs/landscaper/steal-xenial

Migrate to use Xenial in Travis

Author: cherifGsoul

.travis.yml

@@ -1,14 +1,14 @@
 language: node_js
 node_js:
-  - 8.0
+  - 8
   - 10.2.1
 before_script:
   - npm dedupe
-before_install:
-  - "export DISPLAY=:99.0"
-  - "sh -e /etc/init.d/xvfb start"
 sudo: false
 script:
   - npm run jshint
-  - npm run test:browser
-  - npm run coverage:upload
+  - 'npm run test:browser'
+  - 'npm run coverage:upload'
+dist: xenial
+services:
+  - xvfb