could you update gulp?

[caohenghu]

when I install, it tell me: warning gulp-ttf2woff > [email protected]: gulp-util is deprecated - replace it, following the guidelines at https://medium.com/gulpjs/gulp-util-ca3b1f9f9ac5

[Jelle-S]

@ninbryan @nfroidure Pretty please? :)

[nfroidure]

Hi! Would merge any PR doing so but since I'm not using it since a while, I won't have time allocated for this.

[nfroidure]

Also, would give collaborator access to both the repo / npm module if you wish to help maintain it.

[Jelle-S]

@nfroidure @hangy created that PR: #7 :)