chore(package): update rimraf to version 3.0.1

Closes #42

Author: greenkeeper[bot]

package.json

@@ -34,7 +34,7 @@
     "mocha": "^5.0.0",
     "nyc": "^12.0.1",
     "request": "^2.83.0",
-    "rimraf": "^2.6.2",
+    "rimraf": "^3.0.1",
     "ts-node": "^7.0.0",
     "typescript": "^2.6.1"
   },