xiki calls Wunderground.com API

wunderground.rb

require "json"
require "rest-client"

class Wunderground
  KEY = "YOUR-KEY-HERE"
  WU = RestClient::Resource.new "http://api.wunderground.com/api/#{KEY}"
  Sample = "- 02134/\n- AZ/Wikieup/\n- KSGU/\n- FL/Saint_Petersburg/\n- pws:KFLSTPET42/\n"

  def self.menu *args
    return Sample if args == []
    first, *rest = *args
    return raw rest if first == "raw"
    return current args
  end

  def self.current *site
    site = site.join("/")
    response = WU["conditions/q/#{site}.json"].get
    obs = JSON.parse(response)
    alt = obs["response"]
    return alt["error"] if alt["error"] != nil
    return alt["results"] if alt["results"] != nil
    obs = obs["current_observation"]
    reply = {
      :city => obs["observation_location"]["full"],
      :station_id => obs["station_id"],
      :time => obs["observation_time"],
      :weather => obs["weather"],
      :temperature => obs["temperature_string"],
      :relative_humidity => obs["relative_humidity"],
      :pressure => obs["pressure_in"]
    }
    return reply
  end
  def self.raw *site
    site = site.join "/"
    response = WU["conditions/q/#{site}.json"].get
    return response
  end
end

Added self.menu, got the rest working with it.