fix(package): update mkdirp to version 1.0.2

Closes #122

Author: greenkeeper[bot]

package.json

@@ -54,7 +54,7 @@
     "async": "^2.0.1",
     "browserstack": "^1.2.0",
     "debug": "^2.2.0",
-    "mkdirp": "^0.5.1",
+    "mkdirp": "^1.0.2",
     "plist": "^2.0.1",
     "q": "^1.4.1",
     "rimraf": "^3.0.0",