updated README and a screenshot.
included uploaded screenshot to the doc.
some comment love in SWFileStackHandler
cleaned up SWFileStackHandler with new constants. some comment love in
SWProcessedFile header.
Some comment love in SWUnProcessedFile and NSURL+Sweeper headers.
Formatted SWUnprocessedFile implementation file.
basic formatting and some comment love in SWFileStackViewController
Merge pull request #22 from wayfare/cleanup/codebase

Cleanup/codebase