Configurable error messages

[MiguelTVMS]

The error messages generated by the VersionedControllerSelector class could be configurable.
I think the message "The API 'Version2_2.values' doesn't exist" exposes to much information. if we where able to supress this message by just showing the common Not Found or configure our messages by setting those in the web.config would be nice.

[Sebazzz]

I'm going to implement the proposal mentioned in #42. This would allow you to do this by implementing your own exception handler to handle such exceptions yourself.

[MiguelTVMS]

Better then my idea.
Fantastic.
Thanks

[Sebazzz]

In beta3, just pushed to nuget.org, you may either implement your own global exception filter or inherit from DefaultVersioningExceptionHandler and register IVersioningExceptionHandler with your DI container.