Allow phpunit 5

GrahamCampbell · GrahamCampbell · commit 7aa8c3b4c0bf · 2016-01-27T17:48:47.000Z
diff --git a/composer.json b/composer.json
@@ -31,7 +31,7 @@
 	},
 	"require-dev": {
 		"mockery/mockery": "~0.9",
-		"phpunit/phpunit": "~4"
+		"phpunit/phpunit": "~4.0|~5.0"
 	},
 	"bin": [
 		"bin/php-semver-checker"
