MQE-148: Add static tests to Acceptance Test Framework and run it on Travis CI

Author: okolesnyk

.travis.yml

@@ -0,0 +1,7 @@
+language: php
+php:
+  - 7.0
+  - 7.1
+install: composer install --no-interaction --prefer-source
+script:
+  - vendor/bin/phpcs ./src --standard=./dev/tests/static/Magento

composer.json

@@ -10,6 +10,9 @@
         "fzaninotto/faker": "^1.6",
         "vlucas/phpdotenv": "~2.4"
     },
+    "require-dev": {
+        "squizlabs/php_codesniffer": "1.5.3"
+    },
     "autoload": {
         "psr-4": {
             "Magento\\AcceptanceTestFramework\\": [