Merge pull request #7 from pablopaul/patch-1

Require any Codeception release in 2.0.x branch

Author: robot-bucket

composer.json

@@ -17,7 +17,7 @@
     },
     "require": {
 	    "php": ">=5.4.0",
-        "codeception/codeception": "2.0.0",
+        "codeception/codeception": "~2.0.0",
         "allure-framework/allure-php-api": "~1.1.0"
     },
     "autoload": {