Spiking out metadata module support.
Changed IRouteMetadataProvider to support returning different types.
Fixed failing test.
MetadataModule and MetadataModuleRouteMetadataProvider tests.
RouteCache tests.
Added code documentation.
Added metadata module conventions.
Added extra metadata module conventions.
Tidied up demo of metadata module.
Changed documentation for authorization property

Changed documentation for the authorization header property
Addressing some feedback.
Moved metadata module bits into a separate project.
Replaced mods to NancyInternalConfiguration etc with use of IRegistrations.
metadata nuspec added
Merge pull request #1 from jchannon/nuspec

Nuspec
Spiking out metadata module support.
Changed IRouteMetadataProvider to support returning different types.
Fixed failing test.
MetadataModule and MetadataModuleRouteMetadataProvider tests.
Added code documentation.
Added metadata module conventions.