please update less dependency

[Kyle J. Kemp]

when trying to use this with meteor 1.2 (which seems to require less@>2.5.0) this is not usable.

[Sal Sparacio]

@schnie Any chance we can get this fixed? :)

[Greg Neiheisel]

Hey guys, I'm super busy with some other stuff at the moment, but I'll gladly merge a PR right in, if one of you can take care of it! :)

[Jan Hendrik Mangold]

I commented out the api.versionsFrom("METEOR@0.9.0"); at the top of the package.js and that solved it for me.

[Mike Cunneen]

See pull request #10