chore(package): update rimraf to version 3.0.2

Closes #63

Author: greenkeeper[bot]

package.json

@@ -120,7 +120,7 @@
     "react-codemirror": "^1.0.0",
     "react-dom": "^16.3.2",
     "replace-in-file": "^3.4.0",
-    "rimraf": "^2.6.1",
+    "rimraf": "^3.0.2",
     "rollup": "^0.59.0",
     "rollup-plugin-alias": "^1.4.0",
     "rollup-plugin-commonjs": "^9.0.0",