Major refactoring of the DVD encoding algorithms:

Major refactoring of the DVD encoding algorithms:
- Added new -p <profile> option to support multiple encoding profiles.
- Added new ipod profile for MP4 files
- Added new hdtv profile for AVI files (divx)

Added new -e <extension> option that will append a custom
suffix to the end of the dvdname that is being ripped.

Added new information to the README file, including examples.