Lets start with creating our first app
Popup will open which will as for login
Next step it will as for type of application, either select MVC or Webform. I'm selecting MCV here
Under How do you want your add-in to authenticate?, choose Use Windows Azure Access Control Service.and Click Finish
In solution explorer we can see 2 project has been created. One is SharePoint app-part and another is asp.net web app