Add HTML5 Microdata to your applications using Metadata Providers. Create a Microdata Editor application with Intellisense. Example: http://www.codeproject.com/Articles/233896/ASP-NET-MVC-Add-HTML5-Microdata-to-your-applicatio ; http://www.codeproject.com/Articles/5839/DIY-Intellisense
An application with the ability to create/edit HTML files including Microdata details (types/hierarchy, properties).
It can be a Windows application written in C# or a Web application in ASP.NET/C#.
It has to be done in 2-3 days top.