chore(package): update supertest to version 2.0.0

https://greenkeeper.io/

Author: greenkeeperio-bot

package.json

@@ -34,7 +34,7 @@
     "jshint-stylish": "^2.1.0",
     "restify": "^4.0.3",
     "run-sequence": "^1.1.5",
-    "supertest": "^1.1.0"
+    "supertest": "^2.0.0"
   },
   "homepage": "https://github.com/jwoudenberg/json-schema-validation-middleware",
   "dependencies": {