Update to drupal 8.0.0-rc1. For more information, see https://www.drupal.org/node/2582663

vendor/phpunit/php-code-coverage/.travis.yml

@@ -0,0 +1,20 @@
+language: php
+
+php:
+    - 5.3.3
+    - 5.3
+    - 5.4
+    - 5.5
+    - 5.6
+
+before_script:
+    - COMPOSER_ROOT_VERSION=dev-master composer install --prefer-source
+
+script: vendor/bin/phpunit --configuration ./build/travis-ci.xml
+
+notifications:
+  email: false
+  irc:
+    channels:
+      - "irc.freenode.org#phpunit"
+    use_notice: true