Introduce sequelize migrations to create and migrate database tables and removed database scripts. See http://sequelizejs.com/docs/latest/migrations

Created seeds to initialize database with dummy tasks.
Introduce config module to handle configurations per environment. See https://github.com/lorenwest/node-config
Updated README.md to reflect changes.

migrations/20140807220204-create-tasks.js

@@ -0,0 +1,19 @@
+module.exports = {
+  up: function(migration, DataTypes, done) {
+    migration.createTable(
+        'Tasks',
+        {
+          id         : {type: DataTypes.INTEGER, primaryKey: true, autoIncrement: true},
+          content    : {type: DataTypes.TEXT, allowNull: false},
+          parent     : DataTypes.INTEGER,
+          isCompleted: DataTypes.BOOLEAN,
+          createdAt  : DataTypes.DATE,
+          updatedAt  : DataTypes.DATE
+        });
+    done()
+  },
+  down: function(migration, DataTypes, done) {
+    migration.dropTable('Tasks');
+    done()
+  }
+}