print the download location at the end.
Fix the problem if '/' in album title

if '/' in album title, it will make a new folder.
example: 5/9 [1张] will be downloaded to 'main_dir_name/5/9[一张]'
         not to 'main_dir_name/"5/9[一张]"'
currently, I use % to replace /.
Change the print content
Merge pull request #12 from lord63/wangyi

Better prompt