title: adding new property to an object exposed to scope in angularjs
body: <p>I have an object that is exposed to $scope and has properties attached to it.</p>
  
  <p>I access this object in my controller and call a service which does little something. </p>
  
  <p>What I need to add to it is new property to the object(which is going to be an array attached to the object as a property) so that updated object is returned to the controller and I can access the elements of this array using data-expression tag<code>{{ }}</code>.</p>
  
  <p>I would like to know in detail about making such manipulations the right way and possible ways of doing it. </p>