examples/example.js
function lower(str, options, cb) {
  // handle Handlebars or Lodash templates
  if (typeof options === 'function') {
    cb = options;
    options = {};
  }
  cb(null, str.toLowerCase());
}
function lower(str, options, cb) {
  // handle Handlebars or Lodash templates
  if (typeof options === 'function') {
    cb = options;
    options = {};
  }
  cb(null, str.toLowerCase());
}
function lower ( str , options , cb ) { // handle Handlebars or Lodash templates if ( typeof options === 'function' ) { cb = options ; options = { } ; } cb ( null , str . toLowerCase ( ) ) ; }
some simple async helpers
some simple async helpers