Added vendor directories (Peach) for PSR-0 compliance.
Added vendor-prefix(Peach_) to all classes for PSR-0 compliance.

Other modifications:
- autoload settings
- Removed ReverseComparator because of frequency of use
Renamed test files for PSR-0 compliance.

Other modification:
Removed ReverseComparator because of use frequency.
Fixed autoload directory.
Added vendor-prefix(Peach_) to all classes for PSR-0 compliance.

Other modifications:
- Use bootstrap option for phpunit.
Added vendor-prefix (Peach_) for all classes in tutorials for PSR-0 compliance.