Update travis.yml to run e2e tests

Author: mattallan

.travis.yml

@@ -1,19 +1,38 @@
 language: php
 os: linux
 dist: xenial
-sudo: false
 
 notifications:
   email: false
 
+services:
+  - docker
+
 php:
   - 7.0
 
+matrix:
+  fast_finish: true
+  include:
+  - name: "Coding standard check"
+  - name: "E2E tests"
+    script:
+      - npm install jest --global
+      - npm run docker:up
+      - npm run test:e2e
+    after_script:
+      - npm run docker:down
+
 branches:
   only:
     - master
 
+before_install:
+  - nvm install lts/erbium
+  - nvm install 10
+
 install:
+  - npm install
   - composer install
 
 script: