title: Sequelize Dialect needs to be explicitly supplied as of v4.0.0 (getting started way not CLI)
body: <p>I am trying to connect ot <code>mssql</code> with Sequelize using </p>
  
  <pre><code>const Sequelize = require('sequelize');
  
  
  const sequelize = new Sequelize('database', 'username', 'password', {
    host: 'localhost',
    dialect: 'mssql'
  });
  </code></pre>
  
  <p>or</p>
  
  <pre><code>const sequelize = new Sequelize('msssql://user:pass@example.com:5432');
  </code></pre>
  
  <p>and getting <code>Dialect needs to be explicitly supplied as of v4.0.0</code></p>
  
  <p>I do not use CLI just getting started code.</p>
  
  <p>regars</p>