class Restforce::Middleware::Authentication

def encode_www_form(params)
  if URI.respond_to?(:encode_www_form)
    URI.encode_www_form(params)
  else
    params.map do |k, v|
      k, v = CGI.escape(k.to_s), CGI.escape(v.to_s)
      "#{k}=#{v}"
    end.join('&')
  end
end