Added the config module to handle app configuration loading; adding data/ folder for local sqlite storage

src/models/index.js

@@ -1,5 +1,10 @@
+const dbConfig = require('config').get('database');
 const Sequelize = require("sequelize");
-const sequelize = new Sequelize('sqlite::memory:');
+
+const sequelize = new Sequelize({
+  dialect: dbConfig.get('driver'),
+  storage: dbConfig.get('connection_string')
+});
 
 const db = {};