code: function(done) {
            gzip(info.filePath, info.gzFilePath, function() {
              info.gzTime = Date.now();
              // Open and read the size of the minified+gzip output
              readSize(info.gzFilePath, function(size) {
                info.gzSize = size;
                done();
              });
            });
          }
docs: Apply Gzip on minified output