stevedonovan/winapi — pull request #10 by ryugwang (2014-02-07 10:13:47+00:00)
Title: fix winapi.remove_dir() bugs

1. When tree arg is nil, remove_dir() tries to concat 'rmdir ' with nil. Adding "or ''" fixes this.
2. When target directory is not empty, Windows rmdir command waits for user confirmation. So '/Q' switch is needed.