diff --git a/README.md b/README.md
index 6b0d3bf298d40df97b6a2384852a363f23d1b6cf..96a85a75ecf3c8eb87c5f9bff1d6127bc366f733 100644
--- a/README.md
+++ b/README.md
@@ -7,6 +7,7 @@ Made just for fun. [Play it here!](http://gabrielecirulli.github.io/2048/)
 
  - [TimPetricola](https://github.com/TimPetricola) added best score storage
  - [chrisprice](https://github.com/chrisprice) added custom code for swipe handling on mobile
+ - [elektryk](https://github.com/elektryk) made swipes work on Windows Phone
 
 Many thanks to [rayhaanj](https://github.com/rayhaanj), [Mechazawa](https://github.com/Mechazawa), [grant](https://github.com/grant), [remram44](https://github.com/remram44) and [ghoullier](https://github.com/ghoullier) for the many other good contributions.
 
diff --git a/Rakefile b/Rakefile
new file mode 100644
index 0000000000000000000000000000000000000000..673b2733b70aaaf917128eda375b19865206356e
--- /dev/null
+++ b/Rakefile
@@ -0,0 +1,11 @@
+require "date"
+
+namespace :appcache do
+  desc "update the date in the appcache file (in the gh-pages branch)"
+  task :update do
+    appcache = File.read("cache.appcache")
+    updated  = "# Updated: #{DateTime.now}\n"
+
+    File.write("cache.appcache", appcache.sub(/\A(#.*$\n)?/, updated))
+  end
+end