code: function readHash(name, target) {
  			var filepath = getHashPath(name, target);
  			if (fs.existsSync(filepath)) {
  				return fs.readFileSync(filepath, 'utf8');
  			}
  			return null;
  		}
docs: Read hash from cache file or `null` if file don’t exist.
  
  @param {String} name Task name (webfont).
  @param {String} target Task target name.
  @return {String}