FileSystem adapter for LokiJS database persistence on Cordova.
Dependency: https://github.com/apache/cordova-plugin-file
Based on the code from https://github.com/annoyingmouse/lokiFileSystemAdapter
var LokiCordovaFSAdapter = require("./cordova-file-system-adapter");
var adapter = new LokiCordovaFSAdapter({"prefix": "loki"});
var db = new loki("dbname", {adapter: adapter});