removed InstallHandler.

composer.json

@@ -20,15 +20,15 @@
 	},
 	"scripts": {
 		"post-create-project-cmd": [
-			"yii\\composer\\InstallHandler::setPermissions"
+			"yii\\composer\\Installer::setPermission"
 		]
 	},
 	"extra": {
-		"yii-install-writable": [
+		"writable": [
 			"runtime",
 			"web/assets"
 		],
-		"yii-install-executable": [
+		"executable": [
 			"yii"
 		]
 	}