changed uses and example fixed

Author: northys

examples/run_example.php

@@ -2,6 +2,6 @@
 
 require __DIR__ . '/../../../autoload.php';
 
-$inliner = new Northys\CSSInliner;
+$inliner = new Northys\CSSInliner\CSSInliner;
 $inliner->addCSS(__DIR__ . '/example.css');
 echo $inliner->render(file_get_contents(__DIR__ . '/example.html'));

src/Northys/CSSInliner/CSSInliner.php

@@ -3,9 +3,6 @@
 namespace Northys\CSSInliner;
 
 use Northys\CSSInliner\Exceptions;
-use DOMDocument;
-use DOMXPath;
-use Exception;
 use Sabberworm\CSS;
 use Symfony\Component\CssSelector\CssSelector;