Add composer scripts for checking / fixing code style

Author: erayd

README.md

@@ -159,7 +159,9 @@ Please note that using `Constraint::CHECK_MODE_COERCE_TYPES` will modify your or
 ## Running the tests
 
 ```bash
-composer test
-composer testOnly TestClass
-composer testOnly TestClass::testMethod
+composer test                            # run all unit tests
+composer testOnly TestClass              # run specific unit test class
+composer testOnly TestClass::testMethod  # run specific unit test method
+composer style-check                     # check code style for errors
+composer style-fix                       # automatically fix code style errors
 ```

composer.json

@@ -41,7 +41,8 @@
     "require-dev": {
         "json-schema/JSON-Schema-Test-Suite": "1.2.0",
         "phpunit/phpunit": "^4.8.22",
-        "phpdocumentor/phpdocumentor": "~2"
+        "phpdocumentor/phpdocumentor": "~2",
+        "friendsofphp/php-cs-fixer": "^2.1"
     },
     "autoload": {
         "psr-4": { "JsonSchema\\": "src/JsonSchema/" }
@@ -58,6 +59,8 @@
     "scripts": {
         "test" : "vendor/bin/phpunit",
         "testOnly" : "vendor/bin/phpunit --colors --filter",
-        "coverage" : "vendor/bin/phpunit --coverage-text"
+        "coverage" : "vendor/bin/phpunit --coverage-text",
+        "style-check" : "vendor/bin/php-cs-fixer fix --dry-run --verbose --diff",
+        "style-fix" : "vendor/bin/php-cs-fixer fix --verbose"
     }
 }