fix(package): update fs-extra to version 6.0.1

Closes #42

Author: greenkeeper[bot]

package.json

@@ -42,7 +42,7 @@
   "dependencies": {
     "babel-polyfill": "^6.26.0",
     "commander": "^2.9.0",
-    "fs-extra": "^5.0.0",
+    "fs-extra": "^6.0.1",
     "handlebars": "^4.0.11",
     "parse-github-url": "^1.0.1",
     "semver": "^5.1.0"