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README update [ci skip]

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1 parent d9b21e9 commit 470928097338f13f2fd9287df9829dd4d05d9963 @ndbroadbent committed Oct 29, 2012
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@@ -42,7 +42,8 @@ Enjoy your lightning fast deploys!
## Removing Expired Assets
-`turbo-sprockets-rails3` can now remove expired assets after each compile by running the `assets:clean_expired` task after `assets:precompile`.
+`turbo-sprockets-rails3` can now remove expired assets after each compile by providing a task called `assets:clean_expired`. You should run this task after `assets:precompile` to remove outdated assets.
+
An asset will be deleted if it is no longer referenced by `manifest.yml`, and hasn't been actively deployed for more than a day (default).
You can configure the expiry time by setting `config.assets.expire_after` in `config/environments/production.rb`.

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