code: function(callback) {
  				async.each(task.files, function(file, callback2) {
  					var srcPath = file.src[0],
  						extName = path.extname(srcPath).toLowerCase();
  
  					// if it’s an SVG or a PDF, copy the file to the output dir
  					if (extName === '.svg' || extName === '.pdf') {
  						var dstPath = getDestination(srcPath, file.dest, false, options);
  						fs.copy(srcPath, dstPath, function(err){
  							if (err) {
  								grunt.fail.fatal(err);
  							}
  
  							outputFiles.push(dstPath);
  							callback2(null);
  						});
  					} else {
  						callback2(null);
  					}
  
  				}, callback);
  			}
docs: copy SVGs and PDFs