Provides a means of using model binding to get and validate HTTP headers in Web API 2.
A blog post explaining this code and approach is available at http://river.red/binding-to-and-validating-http-headers-with-web-api-2/.
The included sample app demonstrates usage of the attribute. Just open a web browser and access the URLs /demo/headers to see some standard headers echoed back. Try your hand at retrieving the /demo/penguinOnlyInformation to see what kind of validation model binding can provide (only certain browsers and penguins can access this data!).