Allow having token_controller inside namespaces

[albertobajo]

It doesn't take into account non-word characters from the controller name. For example,

class Api::V1::UserTokenController < Knock::AuthTokenController
end

With this patch, entity_name at app/controllers/knock/auth_token_controller.rb returns User instead Api::V1::User.

[HLFH]

@sachse @nsarno Hi. Could you consider merging this PR? It is really helpful for full namespace support. I tested it and now this code in /var/www/login_api/app/controllers/api/v1/user_token_controller.rb works:

module Api::V1
  class UserTokenController < Knock::AuthTokenController
  end
end

No more uninitialized constant Api::V1::User!!! So great!!

[nsarno]

Thanks for contributing @albertobajo and everyone for your patience. And thank you for the ping @HLFH :)

[HLFH]

@nsarno Thanks for merging. Shouldn't we get a v2.0.1 or v.2.1 release for this solved issue? =)

[HLFH]

@nsarno Hi. Could we get soon a 2.1 release please with this fix?