Updated composer.json

I made sure it's ready for the first release on Composer

Author: harm-less

composer.json

@@ -13,11 +13,11 @@
 		}
 	],
 	"require": {
-		"php": ">=5.3.0",
-		"openlss/lib-array2xml": "~0.0.9"
+		"php": ">=5.3.0"
 	},
 	"require-dev": {
-		"phpunit/phpunit": "4.5.*"
+		"phpunit/phpunit": "4.5.*",
+		"openlss/lib-array2xml": "~0.0.9"
 	},
 	"autoload": {
 		"psr-4": {