Add syntax checking and PHPUnit to Travis

.php_cs

@@ -0,0 +1,15 @@
+<?php
+
+return Symfony\CS\Config\Config::create()
+    ->level(Symfony\CS\FixerInterface::NONE_LEVEL)
+    ->fixers([
+        "psr2",
+        "-braces",
+        "-psr0",
+    ])
+    ->finder(
+        Symfony\CS\Finder\DefaultFinder::create()
+            ->in(__DIR__ . "/bin")
+            ->in(__DIR__ . "/src")
+            ->in(__DIR__ . "/test")
+    );

.travis.yml

@@ -0,0 +1,27 @@
+language: php
+
+php:
+  - 5.5
+  - 5.6
+  - 7.0
+  - nightly
+
+cache:
+  directories:
+    - vendor
+
+install:
+  - phpenv config-rm xdebug.ini
+  - composer self-update
+  - if [[ ${TRAVIS_PHP_VERSION:0:3} == "5.5" ]]; then composer require --dev --no-update phpunit/phpunit ^4; fi
+  - composer require satooshi/php-coveralls dev-master --dev --no-update
+  - composer update --ignore-platform-reqs
+  - composer show --installed
+
+script:
+  - find -name "*.php" -not -path "./vendor/*" -print0 | xargs -n 1 -0 php -l
+  - $(php -r 'if (PHP_MAJOR_VERSION >= 7) echo "phpdbg -qrr"; else echo "php";') vendor/bin/phpunit --coverage-text --coverage-clover build/logs/clover.xml
+  - php vendor/bin/php-cs-fixer --diff --dry-run -v fix
+
+after_script:
+  - php vendor/bin/coveralls -v

composer.json

@@ -42,6 +42,7 @@
     },
     "require-dev": {
         "phpunit/phpunit": "^5",
+        "fabpot/php-cs-fixer": "^1.9",
         "macfja/phar-builder": "^0.2.3"
     },
     "extra": {