Add picture directory paths of Windows
Fix monkey patch bug

http://stackoverflow.com/a/12639040

It will cause KeyError if importing the threading module before monkey
patching threads. This bug was appeared on 8a1cea8.
Merge pull request #12 from davidyen11244/master

Catch KeyboardInterrupt when retrieving threads and downloading images.
Merge pull request #13 from chiehtu/master

增加 Windows 圖片資料夾路徑和修正 bug
pass thread id as parameter.