Updated the code to support a suppression of the 'Saved {file name}' mes...

Hi,

In using this module with a fairly large project, I noticed a large number of messages being displayed in the grunt console, and it seemed much faster when suppressing them. The warning and error messages seemed good to have come through though. So I've made a very small update here to support this. Let me know if this seems fine or if you have an alternative way to support this. Thanks!

Sean