Updated composer.json with doctrine/dbal dev dependency

Author: grimzy

composer.json

@@ -19,7 +19,8 @@
         "phpunit/phpunit": "~4.5||5.6.5",
         "mockery/mockery": "^0.9.9",
         "laravel/laravel": "^5.2",
-        "codeclimate/php-test-reporter": "dev-master"
+        "codeclimate/php-test-reporter": "dev-master",
+        "doctrine/dbal": "^2.5"
     },
     "autoload": {
         "psr-4": {