fix(package): update mkdirp to version 1.0.2

Closes #2

Author: greenkeeper[bot]

package.json

@@ -22,7 +22,7 @@
   "dependencies": {
     "glob": "^7.0.0",
     "minimist": "^1.2.0",
-    "mkdirp": "^0.5.1"
+    "mkdirp": "^1.0.2"
   },
   "browserGlobals": {}
 }