adds rake task to scrape sites for spec examples

Rakefile

@@ -1 +1,44 @@
 require "bundler/gem_tasks"
+require "nokogiri"
+require "open-uri"
+require "pp"
+
+task :update_spec_cases do
+  sources = [
+    { urls: ["http://microformats.org/wiki/microformats-2"],
+      html_selector: ".source-html4strict",
+      json_selector: ".source-javascript",
+      html_method: "inner_text"
+    },
+    { urls: ["http://microformat2-node.jit.su/h-adr.html"],
+      html_selector: ".e-x-microformat",
+      json_selector: ".language-json",
+      html_method: "inner_html"
+    }
+  ]
+
+  sources.each do |source|
+    source[:urls].each do |url|
+      document = Nokogiri::HTML(open(url).read)
+      html = document.css(source[:html_selector]).map { |e| e.send(source[:html_method]) }
+      json = document.css(source[:json_selector]).map { |e| e.inner_text }
+
+      filename = url.split("/").last.gsub(/[.]\w+/, "")
+      filepath = "spec/support/cases/"
+
+      ([html.length, json.length].min).times do |index|
+
+        File.open("#{filepath}#{filename}-#{index}.html", "w") do |f|
+          f.write "<!-- #{url} -->\n"
+          f.write html[index]
+        end
+
+        File.open("#{filepath}#{filename}-#{index}.js", "w") do |f|
+          f.write "// #{url}\n"
+          f.write json[index]
+        end
+      end
+
+    end
+  end
+end