text: var inquirer = require('..');
  var Rx = require('rx');
  
  var observe = Rx.Observable.create(function (obs) {
    obs.onNext({
      type: 'input',
      name: 'first_name',
      message: 'What\'s your first name'
    });
  
    obs.onNext({
      type: 'input',
      name: 'last_name',
      message: 'What\'s your last name',
      default: function () {
        return 'Doe';
      }
    });
  
    obs.onNext({
      type: 'input',
      name: 'phone',
      message: 'What\'s your phone number',
      validate: function (value) {
        var pass = value.match(/^([01]{1})?[\-\.\s]?\(?(\d{3})\)?[\-\.\s]?(\d{3})[\-\.\s]?(\d{4})\s?((?:#|ext\.?\s?|x\.?\s?){1}(?:\d+)?)?$/i);
        if (pass) {
          return true;
        }
  
        return 'Please enter a valid phone number';
      }
    });
    obs.onCompleted();
  });
  
  inquirer.prompt(observe).then(function (answers) {
    console.log(JSON.stringify(answers, null, '  '));
  });
  