DownloadImageColor
Creates a data-uri based on the image dominant color. 
Requirements
ImageMagick extension should be present. 
Usage
require './vendor/autoload.php';
$image_url = 'https://www.elephantnaturepark.org/wp-content/uploads/2016/06/Lek_20may2016_01_n.jpg';
$i = new ImageColor\ImageColor($image_url);
echo $i->get_data_uri();
 
Credits
- 
https://manu.ninja/dominant-colors-for-lazy-loading-images
 
- https://www.webrocker.de/2016/03/28/dominant-color-in-an-image/
 
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