Hello World in Vortex on OSX

hello_world_in_vortex_osx.rb

require 'rubygems'
require 'net/dav'
require 'json'
require 'highline/import'
require 'osx_keychain'

dav = Net::DAV.new('https://vortex-systest-dav.uio.no')
keychain = OSXKeychain.new
username = ENV['USER']
password = keychain['vortex-systest-dav.uio.no', username ]
if(!password)
  password = ask("Password for '#{username}: ") {|q| q.echo = "*"}
end
dav.credentials(username, password)

article = {
  "resourcetype" => "structured-article",
  "properties" =>    {
    "title" => "Hello world!",
    "introduction" => "This is the introduction.",
    "content" => "<p>And this is the main content.</p>"
  }
}

dest_url = '/test/hello-world.html'

begin
  dav.put_string(dest_url, article.to_json)
  dav.proppatch(dest_url, '<v:publish-date xmlns:v="vrtx">' + Time.now.httpdate.to_s + '</v:publish-date>')
  published = true
rescue
  published = false
end

if(published)
  keychain['vortex-systest-dav.uio.no', username ] = password
end