Build Fix(the nuget.exe is ignored by default)
 An assembly-level attribute that enables to specify a tag prefix alias for a custom control. This attribute is used by tools such as Microsoft Visual Studio to automatically generate a @ Register directive in Web pages where the custom controls are used.
http://msdn.microsoft.com/en-us/library/system.web.ui.tagprefixattribute.tagprefixattribute(v=vs.110).aspx