title: Add various objects and keys to nsdictionary
body: <p>I would like to create a NSDictionary with the objects and keys, as example below</p>
  
  <pre><code>NSArray *keys = [NSArray arrayWithObjects:@"key1", @"key2", nil];
  NSArray *objects = [NSArray arrayWithObjects:@"value1", @"value2", nil];
  NSDictionary *dictionary = [NSDictionary dictionaryWithObjects:objects 
                                                     forKeys:keys];
  </code></pre>
  
  <p>but I need to add multiple registers, like:</p>
  
  <pre><code>code=1
  description=John
  
  code=2
  description=Paul
  
  code=3
  description=Peter
  .
  .
  .
  
  exactly what I need, an NSDictionary like a json structure:
  {
  "people": [
  { "code":"1" , "name":"John" }, 
  { "code":"2" , "name":"Smith" }, 
  { "code":"3" , "name":"Jones" }
  ]
  }
  </code></pre>