Update read me

Describe should be virtual

Add acceptance tests for action-level API version declarations

Include routes with API version route prefix

Fix IControllerConfiguration recursion. Fixes dotnet#313.

Copy matched RouteData to RouteContext. Fixes dotnet#176

Updated package information

Update readme with API explorer information

Improve performance of action selector

Simplify Error Response Provider (dotnet#111)

Simplifies API versioning error responses