Hi Ritu,
First, there is an article for your reference.
http://msdn.microsoft.com/en-us/library/jj220038.aspx
In addition, for the development questions, I suggest you post the question in the SharePoint Developer Forum to have the issue resolved more efficiently. For your convenience, I attached the contact information below:
http://social.msdn.microsoft.com/Forums/en-US/sharepointdevelopment/threads
Thanks,
Kevin Huang