Add Travis CI configuration

Author: niels-nijens

.travis.yml

@@ -0,0 +1,27 @@
+language: php
+
+sudo: false
+
+matrix:
+  include:
+    - php: 5.6
+    - php: 7.0
+    - php: 7.0
+      env: SYMFONY_VERSION=2.8.*
+    - php: 7.0
+      env: SYMFONY_VERSION=3.0.*
+    - php: 7.0
+      env: SYMFONY_VERSION=3.1.*
+    - php: 7.1
+
+before_install: composer selfupdate
+
+install:
+  - if [ "$SYMFONY_VERSION" != "" ]; then composer require "symfony/symfony:${SYMFONY_VERSION}" --no-update; composer update symfony/*; fi;
+  - if [ "$SYMFONY_VERSION" = "" ]; then composer install; fi;
+
+before_script: mkdir -p build/logs
+
+script: vendor/bin/phpunit --coverage-clover build/logs/clover.xml
+
+after_script: vendor/bin/coveralls -v