fixing outdated property names

[moda20]

changed the sequelize attribute to database and the attributes attribute on models to tableattributes

[moda20]

This will create the right migrations with table attributes not only the table names
fixes : #69

[Naddyson]

This pull request has an issue. sequelize is not defined. I changed and it's working fine with autogenerated models/index.js

Row 72 makemigrations.js
From
let sequelize = require(modelsDir).database;
To
let sequelize = require(modelsDir);