Missing support for [PATCH, LINK, UNLINK] HTTP verbs.

[kenkeiter]

The http_router gem does not support the PATCH, LINK, and UNLINK HTTP verbs; as a result, Padrino doesn't support them, either. Defining routes with any of the following methods raises an error:

patch :index do; end
link :index do; end
unlink :index do; end

This monkey patch resolves the issue, but it's definitely a bad way to handle it.

HttpRouter::Route.send(:remove_const, :VALID_HTTP_VERBS)
HttpRouter::Route.send(:const_set, :VALID_HTTP_VERBS, %w{GET POST PUT PATCH DELETE HEAD OPTIONS TRACE LINK UNLINK})