bind marionette view to model changes

view.js

  Views.ListItem = Marionette.ItemView.extend({
    template: 'item',
    tagName: 'li',
    className: 'gt-result',

    initialize: function() {
      // THIS
      this.listenTo(this.model, 'change', this.render);
      this.listenTo(this.model, 'change', this.renderShape);
    },

    onShow: function() {
      App.listDrawerRegion.$el.find('.gt-list-header').removeClass('gt-hide');
      this.renderShape();
    },

    renderShape: function() {
      console.log('sup');
    }
  });