Fork phpunit to avoid patching it (#45)

Author: vearutop

composer.json

@@ -19,7 +19,7 @@
     "php": ">=5.6.0"
   },
   "require-dev": {
-    "phpunit/phpunit": "4.8.36"
+    "phperf/phpunit": "4.8.37"
   },
   "autoload": {
     "psr-4": {
@@ -35,13 +35,5 @@
     "platform": {
       "php": "5.6.10"
     }
-  },
-  "scripts": {
-    "post-install-cmd": [
-      "patch -N -s -p0 < ./tests/phpunit.patch"
-    ],
-    "post-update-cmd": [
-      "patch -N -s -p0 < ./tests/phpunit.patch"
-    ]
   }
 }