chore(package): update tap-xunit to version 2.0.0

Author: greenkeeper[bot]

package.json

@@ -54,7 +54,7 @@
     "scripty": "^1.6.0",
     "sequelize": "^4.2.1",
     "sqlite3": "^3.1.8",
-    "tap-xunit": "^1.4.0"
+    "tap-xunit": "^2.0.0"
   },
   "babel": {
     "presets": [