Switched to Codeception 2.0.* for application template tests

composer.json

@@ -25,7 +25,7 @@
 		"yiisoft/yii2-gii": "*"
 	},
 	"suggest": {
-		"codeception/codeception": "Codeception, 1.8.*@dev is currently works well with Yii.",
+		"codeception/codeception": "Codeception, 2.0.* is currently works well with Yii.",
 		"codeception/specify": "BDD style code blocks for PHPUnit and Codeception",
 		"codeception/verify": "BDD Assertions for PHPUnit and Codeception"
 	},

tests/README.md

@@ -6,7 +6,7 @@ After creating the basic application, follow these steps to prepare for the test
 1. Install additional composer packages:
 
    ```
-   php composer.phar require --dev "codeception/codeception: 1.8.*@dev" "codeception/specify: *" "codeception/verify: *"
+   php composer.phar require --dev "codeception/codeception: 2.0.*" "codeception/specify: *" "codeception/verify: *"
    ```
 2. In the file `_bootstrap.php`, modify the definition of the constant `TEST_ENTRY_URL` so
    that it points to the correct entry script URL.