[FUNC] Improvement of file scanning

[mikaelkindborg]

It is possible to improve file scanning by using a file watcher. (Current scheme uses simple "polling" of file stat).

Perhaps this is of interest:

https://github.com/WebsiteDeveloper/bracketsFileWatcher https://github.com/DennisKehrig/brackets-v8-node-live https://github.com/DennisKehrig/brackets.ReloadInBrowser/blob/master/main.js https://github.com/shakyShane/browser-sync http://css-tricks.com/cross-browser-css-injection/