Merge pull request #1 from jlindenbaum/master

New features
Stripping out much of the CSS into a separate file
Customize main button text
Removing configuration
transparent background for blackout
Stripping more styling out
Adding centralized logging function and debug setting
improving styling
Thumbnail added, saves on close, every time
No longer reset canvas when closing
fixing parse-breaking typo in cs
optimized css() and allows customizing clear and close button text