chore(package): update sinon-sandbox to version 2.0.4

Closes #157

Author: greenkeeper[bot]

package.json

@@ -62,7 +62,7 @@
     "rimraf": "^2.6.3",
     "safe-publish-latest": "^1.1.2",
     "sinon": "^3.3.0",
-    "sinon-sandbox": "^1.0.2"
+    "sinon-sandbox": "^2.0.4"
   },
   "dependencies": {
     "airbnb-js-shims": "^2 || ^3",