Generate a RSS of a Twitter feed using Ruby and Twitter API v1.1

generate_twitter_list_rss_.rb

require 'rubygems'
require 'twitter'
require 'builder'

client = Twitter::Client.new(
  :consumer_key => "your consumer key",
  :consumer_secret => "your consumer secret",
  :oauth_token => "your oauth token",
  :oauth_token_secret => "your oauth secret"
)

list_name = 'informadores─hispanos'
list_owner = "cobracultura"
maxStatuses = 100
timeline = client.list_timeline(list_owner, list_name,:count => maxStatuses )

xml = Builder::XmlMarkup.new( :indent => 2 )
xml.instruct!


xml.rss "version" => "2.0", "xmlns:dc" => "http://purl.org/dc/elements/1.1/" do
 xml.channel do

   xml.title       "my list : "+list_name
   xml.link        "test"
   xml.description "my list search"

   timeline.reverse.each do |status|
     xml.item do
       xml.guid        status.id
	   xml.author      status.user.name
	   xml.title       status.text
           xml.link        "https://twitter.com/"+status.user.screen_name+"/status/"+status.id.to_s()
           xml.description status.text
           xml.pubDate     status.created_at
     end
   end

 end
end

File.open("output.rss", "w") do |f|
  f.write(xml.target.gsub("<target/>", ""))
end