fix(package): update configstore to version 5.0.1

Closes #14

Author: greenkeeper[bot]

package.json

@@ -26,7 +26,7 @@
   },
   "dependencies": {
     "backbone": "^1.3.2",
-    "configstore": "^3.0.0",
+    "configstore": "^5.0.1",
     "handlebars": "^4.0.5",
     "jquery": "^3.1.1",
     "socket.io-client": "^2.0.0",