Updated reference for Symfony 4 (#4674)

Author: DavertMik

src/Codeception/Module/Symfony.php

@@ -19,32 +19,27 @@
  *
  * <https://github.com/Codeception/symfony-demo>
  *
- * ## Status
- *
- * * Maintainer: **raistlin**
- * * Stability: **stable**
- *
  * ## Config
  *
- * ### Symfony 2.x
+ * ### Symfony 4.x
  *
- * * app_path: 'app' - specify custom path to your app dir, where bootstrap cache and kernel interface is located.
+ * * app_path: 'src' - in Symfony 4 Kernel is located inside `src`
  * * environment: 'local' - environment used for load kernel
- * * debug: true - turn on/off debug mode
  * * em_service: 'doctrine.orm.entity_manager' - use the stated EntityManager to pair with Doctrine Module.
+ * * debug: true - turn on/off debug mode
  * * cache_router: 'false' - enable router caching between tests in order to [increase performance](http://lakion.com/blog/how-did-we-speed-up-sylius-behat-suite-with-blackfire)
  * * rebootable_client: 'true' - reboot client's kernel before each request
  *
- * ### Example (`functional.suite.yml`) - Symfony 2.x Directory Structure
+ * #### Example (`functional.suite.yml`) - Symfony 4 Directory Structure
  *
- * ```
- *    modules:
- *        - Symfony:
- *            app_path: 'app/front'
- *            environment: 'local_test'
- * ```
+ *     modules:
+ *        enabled:
+ *           - Symfony:
+ *               app_path: 'src'
+ *               environment: 'test'
  *
- * ### Symfony 3.x Directory Structure
+ *
+ * ### Symfony 3.x
  *
  * * app_path: 'app' - specify custom path to your app dir, where the kernel interface is located.
  * * var_path: 'var' - specify custom path to your var dir, where bootstrap cache is located.
@@ -54,7 +49,7 @@
  * * cache_router: 'false' - enable router caching between tests in order to [increase performance](http://lakion.com/blog/how-did-we-speed-up-sylius-behat-suite-with-blackfire)
  * * rebootable_client: 'true' - reboot client's kernel before each request
  *
- * ### Example (`functional.suite.yml`) - Symfony 3 Directory Structure
+ * #### Example (`functional.suite.yml`) - Symfony 3 Directory Structure
  *
  *     modules:
  *        enabled:
@@ -64,6 +59,24 @@
  *               environment: 'local_test'
  *
  *
+ * ### Symfony 2.x
+ *
+ * * app_path: 'app' - specify custom path to your app dir, where bootstrap cache and kernel interface is located.
+ * * environment: 'local' - environment used for load kernel
+ * * debug: true - turn on/off debug mode
+ * * em_service: 'doctrine.orm.entity_manager' - use the stated EntityManager to pair with Doctrine Module.
+ * * cache_router: 'false' - enable router caching between tests in order to [increase performance](http://lakion.com/blog/how-did-we-speed-up-sylius-behat-suite-with-blackfire)
+ * * rebootable_client: 'true' - reboot client's kernel before each request
+ *
+ * ### Example (`functional.suite.yml`) - Symfony 2.x Directory Structure
+ *
+ * ```
+ *    modules:
+ *        - Symfony:
+ *            app_path: 'app/front'
+ *            environment: 'local_test'
+ * ```
+ *
  * ## Public Properties
  *
  * * kernel - HttpKernel instance