Added assets, config.xml, authors & changed style

1. Replaced .swc file with assets folder and embedded these resources in
class GUI.
2. Added AUTHORS file.
3. Added ndt-flashConfig.xml Flex compiler configuration file.
4. Updated style in all classes: :
i. Changed tabs to spaces
ii. Made line character limit 80.
iii. Changed class and function comments
iv. Reduced vertical whitespace