facebook/tornado — pull request #468 by MrTravisB (2012-02-23 00:05:42+00:00)
Title: Add ability to watch entire directories

It would be nice if it were possible to watch an directory for changes to reload rather than having to specify individual files. This particularly comes in handy for directories of static files. My particular use case is watching multiple directories of CSS and JavaScript files so that when changed I could recompile them without having to restart the server.