Basic utility classes for wordpress custom fields and meta box.
Perfect when you don't want to use a big plugin like Advanced Custom Fields
Add a field like so:
/**
* Render text field
* @var string $id
* @var string $title
* @var array $options *Optional
*
*/
$fields = new Splash_Fields();
$fields->text('splash_audio_player_text', 'Audio Player Text');