mongoose.txt

 npm install mongoose --save
 very impo - mongoose.connect('mongodb://localhost/advisorDemoTestDB', { useMongoClient: true })
 var mongoose = require('mongoose');
 var Schema = mongoose.Schema;
var adminSchema = new Schema({
    email : { type : String, required : true},
    password : {type : String , required : true}
})
var admin = mongoose.model('admin' , adminSchema);

Allowed datatype 
The allowed SchemaTypes are:

String
Number
Date
Buffer
Boolean
Mixed
ObjectId
Array
userSchema.pre('save', function(next) {
  // get the current date
  var currentDate = new Date();

  // change the updated_at field to current date
  this.updated_at = currentDate;

  // if created_at doesn't exist, add to that field
  if (!this.created_at)
    this.created_at = currentDate;

  next();
});

app.use(morgan('dev'));
morgan is just used to, show in console what all get and post that means REST api going through.