[TASK] Add codeception as dev dependency

Acceptance tests will be done by using codeception

Change-Id: Idad21948afc83d07b06a8fdd4ed095700c932985
Resolves: #68111
Releases: master
Reviewed-on: http://review.typo3.org/41183


Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>
Reviewed-by: Wouter Wolters <typo3@wouterwolters.nl>
Tested-by: Wouter Wolters <typo3@wouterwolters.nl>

composer.json

@@ -46,7 +46,8 @@
 	},
 	"require-dev": {
 		"mikey179/vfsStream": "1.4.*@dev",
-		"phpunit/phpunit": "~4.7.0"
+		"phpunit/phpunit": "~4.7.0",
+		"codeception/codeception": "2.1.0"
 	},
 	"suggest": {
 		"ext-gd": "GDlib/Freetype is required for building images with text (GIFBUILDER) and can also be used to scale images",