gistfile1.rb

require 'sinatra'
require 'nokogiri'

def parse feed
  doc = Nokogiri::XML feed
  doc.search('item').map do |doc_item|
    item = {}
    item[:link] = doc_item.at('link').text
    item[:thumbnail] = doc_item.at('media|thumbnail').attr('url')
    item
  end
end

get '/' do
  "Feed Aggregator"
end