[added]

- travis configuration

.travis.yml

@@ -0,0 +1,20 @@
+language: php
+
+matrix:
+  include:
+    - php: 7.1
+      dist: bionic
+      env: COMPOSER_OPTS=""
+    - php: 7.2
+      dist: bionic
+      env: COMPOSER_OPTS=""
+
+install:
+  - travis_retry composer update --prefer-dist $COMPOSER_OPTS
+
+script:
+  - vendor/bin/phpunit --exclude-group integration --coverage-text --coverage-clover coverage.xml
+
+after_script:
+  - wget https://scrutinizer-ci.com/ocular.phar
+  - php ocular.phar code-coverage:upload --format=php-clover coverage.xml