Facebook and Google integration

sample hybridauth.php to be included in app\config

```
<?php

return array(
    'base_url'  => URL::route('hybridauth', array('process' => true)),
    'providers' => array(
        'Facebook' => array(
            'enabled' => true,
            'keys' => array(
                'id' => '',
                'secret' => ''
            ),
            'scope' => ['user_about_me', 'email']
        ),
        'Google' => array(
            'enabled' => true,
            'keys' => array(
                'id' => '',
                'secret' => ''
            ),
            'access_type' => 'online',
            'scope' => 'https://www.googleapis.com/auth/userinfo.profile https://www.googleapis.com/auth/userinfo.email'
        )
    )
);
```