Web Extensibility Package Content
The Web Extensibility package consists of:
One test object file named <Extensibility Package Name>TestObjects.xml
One configuration file named <Extensibility Package Name>.xml (or .cfg for WPF and Silverlight)
Icon and Help files (Optional)
Icons can be provided in the following file types: .ico, .exe, and .dll.
Help files are provided as .chm files.