Initial commit with tests, and stuff.

.travis.yml

@@ -0,0 +1,22 @@
+language: php
+php:
+  - 5.6
+  - 7.0
+  - 7.1
+  - 7.2
+  - nightly
+matrix:
+  allow_failures:
+    - php: nightly
+  fast_finish: true
+cache:
+  directories:
+    - $HOME/.composer/cache/files
+before_script:
+  - phpenv global "$TRAVIS_PHP_VERSION"
+  - composer config extra.platform.php $TRAVIS_PHP_VERSION
+install:
+  - flags="--ansi --prefer-dist --no-interaction --optimize-autoloader --no-suggest --no-progress"
+  - travis_wait 30 composer install $flags
+script:
+- ./vendor/bin/phpunit -c phpunit.xml