chore(package): update rimraf to version 3.0.1

Closes #26

Author: greenkeeper[bot]

package.json

@@ -57,7 +57,7 @@
     "eslint-config-airbnb": "^17.0.0",
     "expect.js": "^0.3.1",
     "nyc": "^11.2.1",
-    "rimraf": "^2.5.2"
+    "rimraf": "^3.0.1"
   },
   "files": [
     "lib",