title: How to invite friends to my application via facebook iOS SDK and Graph API
body: <p>I'm writing an iPhone application.</p>
  
  <p>I want to give the user the option to invite friends to start using my application via Facebook.</p>
  
  <p>More specifically I want to present a dialog that will let the user to select specific friends to invite.</p>
  
  <p>How can I do this?</p>
  
  <p>Thanks.</p>