Placing images in subfolder based on Tumblr name.
Updated method by which I organize into folders.
No more debug msg.
Added bit about -s in readme.
Added usage()
Handling `-s` arg to put into subfolders
Fixing issue where the input site was the name of a directory in cwd
Matching if-statement style
Appropriately checking if USE_SUBFOLDERS was set
Merge pull request #1 from parkr/subfolders

Placing images in subfolder based on Tumblr name.