Merge branch 'master' into gh-pages

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.
 

Rakefile

+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