chore(package): update rimraf to version 2.7.1

Closes #92

Author: greenkeeper[bot]

package.json

@@ -92,7 +92,7 @@
     "mocha": "5.2.0",
     "nodemon": "1.18.7",
     "prettier": "1.15.2",
-    "rimraf": "2.6.2",
+    "rimraf": "2.7.1",
     "ts-node": "^7.0.1",
     "tslint": "5.11.0",
     "tslint-config-prettier": "1.17.0",