Validation object

New obejct validation.

Can be validated: public properties and properties with getter method.
Example:

```php
class Mock
{
	private $name;

	public $lastName;

	private $creditCard = "unaccessible";

	public function getName()
	{
		return $this->name;
	}

	public function setName($name)
	{
		$this->name = $name;
	}
}


$mock = new Mock();
$mock->setName("pedro");
$mock->lastName = "ribeiro";

$config['registering'] = array(
    'name' => v::maxLength(50),
    'lastName' => v::maxLength(50),
);

$validationObject = ValidationGroupsFactory::build(new ArrayParserObjectStrategy($config));
$validationObject->validate($mock, "registering"); // true

```


### PHPUnit Report:

phpunit src/Melody/Validation/ValidationObjectTest.php 
PHPUnit 3.7.28 by Sebastian Bergmann.

Configuration read from /home/pedro/dev/validator/tests/phpunit.xml.dist

.....

Time: 72 ms, Memory: 3.25Mb

OK (5 tests, 6 assertions)