chore(package): update rimraf to version 3.0.1

Closes #17

Author: greenkeeper[bot]

package.json

@@ -21,7 +21,7 @@
     "@types/loglevel": "^1.5.3",
     "@types/node": "^10.3.3",
     "jest": "^23.1.0",
-    "rimraf": "^2.6.2",
+    "rimraf": "^3.0.1",
     "tslint": "^5.10.0",
     "tslint-microsoft-contrib": "^6.0.0",
     "tsutils": "^3.5.2",