Setting up a Sails JS app with Postgres database

I am absolutely new to Postgres. I have previously set up a sails app using MongoDB as the underlying database. It was quite simple. However, with postgres, I am facing some issues.

I am following this tutorial

Here are the contents of my config/local.js file

//config/local.js

module.exports = {

  port: process.env.PORT || 1337,

  environment: process.env.NODE_ENV || 'development',

  adapters: {

    'default': 'postgres',

    postgres: {
      module   : 'sails-postgresql',
      host     : 'localhost',
      port     : 5432,
      user     : 'root',
      password : '',
      database : 'postgres',

      schema: true //This makes sure that sails matches 
                   //the database schema to your models.
    }

  }

};

When I run sails lift with verbose logs, The process gets stuck at the following stage:

verbose: Grunt :: 
Running "sails-linker:devTplJADE" (sails-linker) task

verbose: Grunt :: 

verbose: Grunt :: Running "watch" task

verbose: Grunt :: Waiting...

Any help ?

EDIT:

It's working now. Had to create a unix user with the same name as postgre user and db.

Now the porblem is, I want to create a table with two columns

CREATE TABLE users ( user_id serial, user_name varchar(50) );

I create this schema in postgre. The when I submit a POST request, it overrides the schema. I don't want that to happen. Any clues?