index.js
function createIcon (buf, maxAge) {
  return {
    body: buf,
    headers: {
      'Cache-Control': 'public, max-age=' + Math.floor(maxAge / 1000),
      'ETag': etag(buf)
    }
  }
}
function createIcon (buf, maxAge) {
  return {
    body: buf,
    headers: {
      'Cache-Control': 'public, max-age=' + Math.floor(maxAge / 1000),
      'ETag': etag(buf)
    }
  }
}
function createIcon ( buf , maxAge ) { return { body : buf , headers : { 'Cache-Control' : 'public, max-age=' + Math . floor ( maxAge / 1000 ) , 'ETag' : etag ( buf ) } } }
Create icon data from Buffer and max-age.

@private
@param {Buffer} buf
@param {number} maxAge
@return {object}
Create icon data from Buffer and max - age .