Added ability to define an array of SERVER_NAME options for each environ...

...ment in addition to just using a string.

Thought you might want to pull this change. This allows you to specify an array of options for each environment instead of just a single string. 

Example:
```php
$environments = array(
	'local'       => array('.local', 'local.'),
	'development' => '.dev',
	'staging'     => 'stage.',
	'preview'     => 'preview.',
);
```