yeoman/generator — pull request #326 by yosuke-furukawa (2013-07-27 16:38:48+00:00)
Title: Add undefined check for expandFiles

if `options` is undefined in `expandFiles` function, this method throws exceptions like `Cannot read property 'cwd' of undefined`.
So I add a check options is `undefined` or not.

If you accept this fix, please merge.