Added "RubyBackup" Module

Part 1. Haven't quite broken everything yet, so I'm committing to make a
record.
Reorganized app around RubyBackup module

- Added lib/, bin/, config/ directories
- Extended config.yml (see README or the file itself)
- I think I have to completely rewrite FileGatherer now.
Finished refactor with RubyBackup module

Compress is still completely broken, but it was before I changed this
anyway.