Version 2.0!

*This update contains changes that are NOT backwards compatible*

- The Demo has been split out to a [separate repository](https://github.com/TeamOneTickets/ticket-evolution-api-demo).
- The DataLoaders have been split out to a [separate repository](https://github.com/TeamOneTickets/ticket-evolution-dataloaders).
- Added [Composer](http://getcomposer.org/) support.
- Added more proper [namespace](http://php.net/manual/en/language.namespaces.rationale.php) support
- Require autoloading by removing all `require_once` statements for requiring classes
- Removed some methods that were previously deprecated