Don't use node-sass as a hard dependency

[johanbrook]

Idea from @jadsonlourenco in #10 (comment).

I don't know if it's possible to do a conditional Npm.depends call though – weak dependencies are only available for Meteor packages.

[jadsonlourenco]

Well, I tested the new version (0.4.6) and works fine, now don't have the SASS compiler by default, don't get any error when running the "bundle" version like before. Thank you!

PS: You know that the new Meteor 1.2 will have a better support to compile the SASS/LESS/STYLUS without packages, I think, I will read more about and then back, maybe it can help us to have this compilers without problems. I mean, all in same time.

[johanbrook]

@jadsonlourenco Hm, weird – I removed Sass as hard dep in v0.5.0, in #35 :) But good thing it works anyway.

You know that the new Meteor 1.2 will have a better support to compile the SASS/LESS/STYLUS without packages

Yep, I think things will be a tad easier, at least.