updating phpunit version

SignpostMarv · SignpostMarv · commit 3e70ca97657e · 2016-01-07T18:30:09.000Z
diff --git a/composer.json b/composer.json
@@ -6,7 +6,7 @@
     "require": {
     },
     "require-dev": {
-        "phpunit/phpunit": "~3.7"
+        "phpunit/phpunit": "^5.1"
     },
     "minimum-stability": "stable",
     "autoload": {
