Minor spelling fixes and some suggestions
Minor spelling fixes and some suggestions

Great job so far with this tutorial. Keep on the good work!

Two suggestions:
1. Use the [escapeHtml](http://framework.zend.com/manual/current/en/modules/zend.escaper.escaping-html.html) view helper when echoing album data
2. Atm the AlbumEntity does nothing. You could pass an array to the table gateway and it would have the same result. I know the model should be kept simple for the tutorial. However, I would use the entity at least to ensure data validity:

```php
<?php
namespace Album\Model\Entity;

use Zend\Stdlib\ArraySerializableInterface;

/**
 * Class AlbumEntity
 *
 * @package Album\Model\Entity
 */
class AlbumEntity implements ArraySerializableInterface
{
    /**
     * @var integer
     */
    private $id;

    /**
     * @var string
     */
    private $artist;

    /**
     * @var string
     */
    private $title;

    /**
     * @return int
     */
    public function getId()
    {
        return $this->id;
    }

    /**
     * @return string
     */
    public function getArtist()
    {
        return $this->artist;
    }

    /**
     * @return string
     */
    public function getTitle()
    {
        return $this->title;
    }

    /**
     * @param array $array
     */
    public function exchangeArray(array $array)
    {
        foreach ($array as $key => $value) {
            $setter = 'set'.ucfirst($key);
            if (method_exists($this, $setter)) {
                $this->{$setter}($value);
            }
        }
    }

    /**
     * @return array
     */
    public function getArrayCopy()
    {
        $data = [];

        foreach (get_object_vars($this) as $key => $value) {
            $data[$key] = $value;
        }

        return $data;
    }

    private function setId($id)
    {
        $id = (int)$id;

        if ($id <= 0) {//throw exception}
        $this->id = $id;
    }
   
    private function setArtist($artist)
    {
        //Check min length of artist?
        $this->artist = (string)$artist;
    }

    private function setTitle($title)
    {
        //Check min length of title?
        $this->title = (string)$title;
    }

}
```
lowtower/zend-expressive-tutorial,lowtower/zend-expressive-tutorial