rfg-api should use [unzip2](https://www.npmjs.com/package/unzip2) instead of [unzip](https://www.npmjs.com/package/unzip). See https://github.com/RealFaviconGenerator/grunt-real-favicon/issues/32 and probably https://github.com/RealFaviconGenerator/grunt-real-favicon/issues/31 too.
rfg-api should use unzip2 instead of unzip. See RealFaviconGenerator/grunt-real-favicon#32 and probably RealFaviconGenerator/grunt-real-favicon#31 too.