Added --force-watch option.

[thomaschaaf]

This forces the use of fs.watch instead of fs.watchFile.

I added this option as I constantly having a CPU load of 100% on 5 files on Windows 7 x64 with an ssd and node 0.10.15.

[iangreenleaf]

Thanks. This seems like a good idea. This is very much a temporary flag, as we can hopefully reach one solution that works well for all systems, but I'm happy to go with this as a stopgap measure.

[thomaschaaf]

:) No Problem. In the official documentation I read that fs.watchFile is not recommended anymore. Have you thought about removing it completely? (http://nodejs.org/api/fs.html#fs_fs_watchfile_filename_options_listener)

[iangreenleaf]

Yes, I would very much like to unify everything under a single stable solution (see #71).

We've looked at it in the past, and had a couple hurdles to deal with. There were some filesystem problems with too many file handles or the like (#34), but it's possible those are fixed in newer versions of Node. There is also the problem that fs.watch doesn't provide file names on all platforms, which breaks some existing features. It might be possible to work around this, but I simply haven't had much time to dedicate to this project. If you feel like taking a crack at it, I'd be more than happy to see what you can come up with. Here's what I'd want to see in the ultimate solution.