title: How to update js data in odoo 10
body: <p>I need to include additional fields in /point_of_sale/static/src/js/models.js
  in class PosModel, variable models, 'res.company' model. In base variant it looks like this:</p>
  
  <pre><code>odoo.define('point_of_sale.models', function (require) {
  "use strict";
  
  ...
  
  var QWeb = core.qweb;
  var _t = core._t;
  var Mutex = utils.Mutex;
  var round_di = utils.round_decimals;
  var round_pr = utils.round_precision;
  var Backbone = window.Backbone;
  
  var exports = {};
  
  exports.PosModel = Backbone.Model.extend({
      initialize: function(session, attributes) {
          ...
      },
      ...
      models: [
        { 
          model:  'res.company',
          fields: [ 'currency_id', 'email', 'website', 'company_registry', 'vat', 'name', 'phone', 'partner_id' , 'country_id', 'tax_calculation_rounding_method'],
          ids:    function(self){ return [self.user.company_id[0]]; },
          loaded: function(self,companies){ self.company = companies[0]; },
      },
      ]
  })
  }); 
  </code></pre>
  
  <p>While I need to include additional fields, let's say 'city', 'logo' from 'company' model. So models should look like this:</p>
  
  <pre><code>...
          models: [
            { 
              model:  'res.company',
              fields: [ 'currency_id', 'email', 'website', 'company_registry', 'vat', 'name', 'phone', 'partner_id' , 'country_id', 'tax_calculation_rounding_method', 'logo', 'city'],
              ids:    function(self){ return [self.user.company_id[0]]; },
              loaded: function(self,companies){ self.company = companies[0]; },
          },
          ]
  ...
  </code></pre>
  
  <p>I tried to use include, like this:</p>
  
  <pre><code>odoo.my_addon = function(instance){
      var _t = instance.web._t,
      _lt = instance.web._lt;
      var QWeb = instance.web.qweb;
  
  instance.point_of_sale.PosModel.include({
  models: [
      { 
      model:  'res.company',
      fields: [ 'currency_id', 'email', 'website', 'company_registry', 'vat', 'name', 'phone', 'partner_id' , 'country_id', 'tax_calculation_rounding_method', 'logo', 'city'],
      ids:    function(self){ return [self.user.company_id[0]]; },
      loaded: function(self,companies){ self.company = companies[0]; },
  }]
  })
  });
  </code></pre>
  
  <p>But it didn't worked out</p>