Fixed gulp-favicons implementation

[haydenbleasel]

No description provided.

[openjck]

Thanks so much for submitting this.

I'm fascinated by the changes. I think you mentioned discovering a bug in one of your depenencies. That must be what the whitespace/self-closing changes are about, right?

I see this error when running Gulp. Aside from that, this looks great! 😄

[openjck]

Going to close this for now. Might hop back onto the gulp-favicons task someday. Thanks for your help!