Handling SASS partials

[mattarau]

Hey @joshdmiller,

I've found your warlock project while looking for solutions of some issues with SASS partials on an AngularJS modular project and was taking I look at this spell to see if it maybe could be a future solution.

The thing is that, if the idea is to use "convention over configuration", it might be better to exclude any .sass or .scss files that starts with an underscore, since they are SASS partials and conventionally should be imported and not directly compiled.

It seems that this is only necessary because of a bug on the SASS compiler that doesn't ignore partials files as reported on this grunt-contrib-sass issue.

[joshdmiller]

@mdentinho - You're absolutely right and I'd happily take a pull request. :-)

PS: Super sorry this took so long to reply. With multiple repositories with varying activity levels, it can be very difficult to keep up if I don't see the initial email. :-(