New notes on readme.
Fixed mistake in guard-file.  The right tests run..  However my real
mistake might have been the test/ directory structure.
Augmented api method to support Boolean and Error return cases.
Updated "throw_error" calls to "raise_error"
Added error: true option to some API calls.
* Added translation for SDL_fourcc
Added attribute readers.
* Redefined pixel related ENUMs translations
* Implemented pixel related macros.
* Added pixel format enumeration
* More Surface functionality linked
More testing.