How To Migrate Reporting Services From SQL Server 2005 To SQL Server 2012

Hi,

Can you please guide me how to Migrate Reporting Services From Sql Server 2005 to Sql Server 2012.

There is a One LinK in Internet:

http://chayadigital.wordpress.com/2014/04/02/how-to-migrate-reporting-services-from-sql-server-2005-to-sql-server-2012/

In above Link given brief description, In above link they didn't mention any thing about rdl files.

So how to move rdl files to new Server.

Your help will be Appreciate.

Thanks,