Add support for roda web framework
Work without indifferent params

Both Rails and Sinatra support indifferent params, but roda does not
by default, and there is no reason that AutoForme should require that
indifferent params be used.
Assume :sequel model type

As Sequel::Model is the only currently support model type, and
there aren't immediate plans to add other model types, it seems
pointless to force users to specify it.
Use roda instead of sinatra on demo site
Bump version to 1.0.0